diff --git a/addons/recaptcha/recaptcha.class.php b/addons/recaptcha/recaptcha.class.php
index dbf2bf86c..11177627b 100644
--- a/addons/recaptcha/recaptcha.class.php
+++ b/addons/recaptcha/recaptcha.class.php
@@ -18,7 +18,7 @@ class reCAPTCHA
 		$response = Context::get('g-recaptcha-response');
 		if (!$response)
 		{
-			return new BaseObject(-1, 'recaptcha.msg_recaptcha_invalid_response');
+			throw new Rhymix\Framework\Exception('recaptcha.msg_recaptcha_invalid_response');
 		}
 		
 		try
@@ -31,17 +31,17 @@ class reCAPTCHA
 		}
 		catch (\Requests_Exception $e)
 		{
-			return new BaseObject(-1, 'recaptcha.msg_recaptcha_connection_error');
+			throw new Rhymix\Framework\Exception('recaptcha.msg_recaptcha_connection_error');
 		}
 		
 		$verify = @json_decode($verify_request->body, true);
 		if ($verify && isset($verify['error-codes']) && in_array('invalid-input-response', $verify['error-codes']))
 		{
-			return new BaseObject(-1, 'recaptcha.msg_recaptcha_invalid_response');
+			throw new Rhymix\Framework\Exception('recaptcha.msg_recaptcha_invalid_response');
 		}
 		elseif (!$verify || !$verify['success'] || (isset($verify['error-codes']) && $verify['error-codes']))
 		{
-			return new BaseObject(-1, 'recaptcha.msg_recaptcha_server_error');
+			throw new Rhymix\Framework\Exception('recaptcha.msg_recaptcha_server_error');
 		}
 		else
 		{
diff --git a/classes/module/ModuleHandler.class.php b/classes/module/ModuleHandler.class.php
index 9f59bd6ca..3c091437f 100644
--- a/classes/module/ModuleHandler.class.php
+++ b/classes/module/ModuleHandler.class.php
@@ -86,7 +86,7 @@ class ModuleHandler extends Handler
 		if($isInvalid)
 		{
 			htmlHeader();
-			echo lang("msg_invalid_request");
+			echo lang('msg_security_violation');
 			htmlFooter();
 			Context::close();
 			exit;
@@ -464,7 +464,7 @@ class ModuleHandler extends Handler
 
 			if(!in_array(strtoupper($_SERVER['REQUEST_METHOD']), $allowedMethodList))
 			{
-				$this->error = "msg_invalid_request";
+				$this->error = 'msg_invalid_request';
 				$oMessageObject = self::getModuleInstance('message', $display_mode);
 				$oMessageObject->setError(-1);
 				$oMessageObject->setMessage($this->error);
@@ -620,7 +620,7 @@ class ModuleHandler extends Handler
 
 					if(!in_array(strtoupper($_SERVER['REQUEST_METHOD']), $allowedMethodList))
 					{
-						$this->error = "msg_invalid_request";
+						$this->error = 'msg_security_violation';
 						$oMessageObject = self::getModuleInstance('message', $display_mode);
 						$oMessageObject->setError(-1);
 						$oMessageObject->setMessage($this->error);
@@ -635,7 +635,7 @@ class ModuleHandler extends Handler
 					if($xml_info->action->{$this->act} && $xml_info->action->{$this->act}->check_csrf !== 'false' && !checkCSRF())
 					{
 						$this->_setInputErrorToContext();
-						$this->error = 'msg_invalid_request';
+						$this->error = 'msg_security_violation';
 						$oMessageObject = ModuleHandler::getModuleInstance('message', $display_mode);
 						$oMessageObject->setError(-1);
 						$oMessageObject->setMessage($this->error);
@@ -1267,9 +1267,16 @@ class ModuleHandler extends Handler
 				continue;
 			}
 			
-			$before_each_trigger_time = microtime(true);
-			$output = $oModule->{$called_method}($obj);
-			$after_each_trigger_time = microtime(true);
+			try
+			{
+				$before_each_trigger_time = microtime(true);
+				$output = $oModule->{$called_method}($obj);
+				$after_each_trigger_time = microtime(true);
+			}
+			catch (Rhymix\Framework\Exception $e)
+			{
+				$output = new BaseObject(-2, $e->getMessage());
+			}
 
 			if ($trigger_name !== 'common.flushDebugInfo')
 			{
diff --git a/classes/module/ModuleObject.class.php b/classes/module/ModuleObject.class.php
index e1643bbfe..e6b6d9cfa 100644
--- a/classes/module/ModuleObject.class.php
+++ b/classes/module/ModuleObject.class.php
@@ -136,7 +136,7 @@ class ModuleObject extends BaseObject
 		// Set privileges(granted) information
 		if($this->setPrivileges() !== true)
 		{
-			$this->stop('msg_invalid_request');
+			$this->stop('msg_not_permitted');
 			return;
 		}
 		
@@ -158,7 +158,14 @@ class ModuleObject extends BaseObject
 		// Execute init
 		if(method_exists($this, 'init'))
 		{
-			$this->init();
+			try
+			{
+				$this->init();
+			}
+			catch (Rhymix\Framework\Exception $e)
+			{
+				$this->stop($e->getMessage());
+			}
 		}
 	}
 	
@@ -569,8 +576,16 @@ class ModuleObject extends BaseObject
 
 			$oModuleModel->syncSkinInfoToModuleInfo($this->module_info);
 			Context::set('module_info', $this->module_info);
+
 			// Run
-			$output = $this->{$this->act}();
+			try
+			{
+				$output = $this->{$this->act}();
+			}
+			catch (Rhymix\Framework\Exception $e)
+			{
+				$output = new BaseObject(-2, $e->getMessage());
+			}
 		}
 		else
 		{
diff --git a/common/framework/exceptions/featuredisabled.php b/common/framework/exceptions/featuredisabled.php
new file mode 100644
index 000000000..2c22f992b
--- /dev/null
+++ b/common/framework/exceptions/featuredisabled.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Rhymix\Framework\Exceptions;
+
+/**
+ * The "feature disabled" exception class.
+ */
+class FeatureDisabled extends \Rhymix\Framework\Exception
+{
+	public function __construct($message = '', $code = 0, $previous = null)
+	{
+		if ($message === '')
+		{
+			$message = lang('msg_feature_disabled');
+		}
+		parent::__construct($message, $code, $previous);
+	}
+}
diff --git a/common/framework/exceptions/invalidrequest.php b/common/framework/exceptions/invalidrequest.php
new file mode 100644
index 000000000..fcb2595f0
--- /dev/null
+++ b/common/framework/exceptions/invalidrequest.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Rhymix\Framework\Exceptions;
+
+/**
+ * The "invalid request" exception class.
+ */
+class InvalidRequest extends \Rhymix\Framework\Exception
+{
+	public function __construct($message = '', $code = 0, $previous = null)
+	{
+		if ($message === '')
+		{
+			$message = lang('msg_invalid_request');
+		}
+		parent::__construct($message, $code, $previous);
+	}
+}
diff --git a/common/framework/exceptions/mustlogin.php b/common/framework/exceptions/mustlogin.php
new file mode 100644
index 000000000..3a73869dd
--- /dev/null
+++ b/common/framework/exceptions/mustlogin.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Rhymix\Framework\Exceptions;
+
+/**
+ * The "must login" exception class.
+ */
+class MustLogin extends \Rhymix\Framework\Exception
+{
+	public function __construct($message = '', $code = 0, $previous = null)
+	{
+		if ($message === '')
+		{
+			$message = lang('msg_not_logged');
+		}
+		parent::__construct($message, $code, $previous);
+	}
+}
diff --git a/common/framework/exceptions/notpermitted.php b/common/framework/exceptions/notpermitted.php
new file mode 100644
index 000000000..cb6c749d9
--- /dev/null
+++ b/common/framework/exceptions/notpermitted.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Rhymix\Framework\Exceptions;
+
+/**
+ * The "not permitted" exception class.
+ */
+class NotPermitted extends \Rhymix\Framework\Exception
+{
+	public function __construct($message = '', $code = 0, $previous = null)
+	{
+		if ($message === '')
+		{
+			$message = lang('msg_not_permitted');
+		}
+		parent::__construct($message, $code, $previous);
+	}
+}
diff --git a/common/framework/exceptions/securityviolation.php b/common/framework/exceptions/securityviolation.php
new file mode 100644
index 000000000..a70a4c4b3
--- /dev/null
+++ b/common/framework/exceptions/securityviolation.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Rhymix\Framework\Exceptions;
+
+/**
+ * The "security violation" exception class.
+ */
+class SecurityViolation extends \Rhymix\Framework\Exception
+{
+	public function __construct($message = '', $code = 0, $previous = null)
+	{
+		if ($message === '')
+		{
+			$message = lang('msg_security_violation');
+		}
+		parent::__construct($message, $code, $previous);
+	}
+}
diff --git a/common/framework/exceptions/targetnotfound.php b/common/framework/exceptions/targetnotfound.php
new file mode 100644
index 000000000..85dd0b1cb
--- /dev/null
+++ b/common/framework/exceptions/targetnotfound.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Rhymix\Framework\Exceptions;
+
+/**
+ * The "target not found" exception class.
+ */
+class TargetNotFound extends \Rhymix\Framework\Exception
+{
+	public function __construct($message = '', $code = 0, $previous = null)
+	{
+		if ($message === '')
+		{
+			$message = lang('msg_not_founded');
+		}
+		parent::__construct($message, $code, $previous);
+	}
+}
diff --git a/common/lang/en.php b/common/lang/en.php
index fd557c7dd..1efd7d499 100644
--- a/common/lang/en.php
+++ b/common/lang/en.php
@@ -231,6 +231,8 @@ $lang->msg_input_password = 'Please type the password.';
 $lang->msg_invalid_document = 'Invalid Article Number';
 $lang->msg_invalid_request = 'Invalid Request';
 $lang->msg_invalid_password = 'The password you entered is incorrect.';
+$lang->msg_security_violation = 'Security Violation';
+$lang->msg_feature_disabled = 'This feature is disabled.';
 $lang->msg_error_occured = 'An error has occured.';
 $lang->msg_not_founded = 'Cannot find the target.';
 $lang->msg_no_result = 'No results found.';
diff --git a/common/lang/ko.php b/common/lang/ko.php
index b5571ba87..76259ed8e 100644
--- a/common/lang/ko.php
+++ b/common/lang/ko.php
@@ -231,6 +231,8 @@ $lang->msg_input_password = '비밀번호를 입력하세요.';
 $lang->msg_invalid_document = '잘못된 문서번호입니다.';
 $lang->msg_invalid_request = '잘못된 요청입니다.';
 $lang->msg_invalid_password = '비밀번호가 올바르지 않습니다.';
+$lang->msg_security_violation = '보안정책상 허용되지 않습니다.';
+$lang->msg_feature_disabled = '사용할 수 없는 기능입니다.';
 $lang->msg_error_occured = '오류가 발생했습니다.';
 $lang->msg_not_founded = '대상을 찾을 수 없습니다.';
 $lang->msg_no_result = '검색 결과가 없습니다.';
diff --git a/modules/admin/admin.admin.controller.php b/modules/admin/admin.admin.controller.php
index 80c7c3d67..275ec2730 100644
--- a/modules/admin/admin.admin.controller.php
+++ b/modules/admin/admin.admin.controller.php
@@ -18,11 +18,9 @@ class adminAdminController extends admin
 	function init()
 	{
 		// forbit access if the user is not an administrator
-		$oMemberModel = getModel('member');
-		$logged_info = $oMemberModel->getLoggedInfo();
-		if($logged_info->is_admin != 'Y')
+		if (!$this->user->isAdmin())
 		{
-			return $this->stop("admin.msg_is_not_administrator");
+			throw new Rhymix\Framework\Exceptions\NotPermitted('admin.msg_is_not_administrator');
 		}
 	}
 
@@ -35,7 +33,7 @@ class adminAdminController extends admin
 		$menuSrl = Context::get('menu_srl');
 		if(!$menuSrl)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oMenuAdminController = getAdminController('menu');
@@ -477,7 +475,7 @@ class adminAdminController extends admin
 		}
 		else
 		{
-			return $this->setError('fail_to_delete');
+			throw new Rhymix\Framework\Exception('fail_to_delete');
 		}
 		$this->setMessage('success_deleted');
 	}
@@ -501,7 +499,7 @@ class adminAdminController extends admin
 		Rhymix\Framework\Config::set('use_sso', $vars->use_sso === 'Y');
 		if (!Rhymix\Framework\Config::save())
 		{
-			return $this->setError('msg_failed_to_save_config');
+			throw new Rhymix\Framework\Exception('msg_failed_to_save_config');
 		}
 		
 		$this->setMessage('success_updated');
@@ -521,19 +519,19 @@ class adminAdminController extends admin
 		// Validate the mail sender's information.
 		if (!$vars->mail_default_name)
 		{
-			return $this->setError('msg_advanced_mailer_sender_name_is_empty');
+			throw new Rhymix\Framework\Exception('msg_advanced_mailer_sender_name_is_empty');
 		}
 		if (!$vars->mail_default_from)
 		{
-			return $this->setError('msg_advanced_mailer_sender_email_is_empty');
+			throw new Rhymix\Framework\Exception('msg_advanced_mailer_sender_email_is_empty');
 		}
 		if (!Mail::isVaildMailAddress($vars->mail_default_from))
 		{
-			return $this->setError('msg_advanced_mailer_sender_email_is_invalid');
+			throw new Rhymix\Framework\Exception('msg_advanced_mailer_sender_email_is_invalid');
 		}
 		if ($vars->mail_default_reply_to && !Mail::isVaildMailAddress($vars->mail_default_reply_to))
 		{
-			return $this->setError('msg_advanced_mailer_reply_to_is_invalid');
+			throw new Rhymix\Framework\Exception('msg_advanced_mailer_reply_to_is_invalid');
 		}
 		
 		// Validate the mail driver.
@@ -541,7 +539,7 @@ class adminAdminController extends admin
 		$mail_driver = $vars->mail_driver;
 		if (!array_key_exists($mail_driver, $mail_drivers))
 		{
-			return $this->setError('msg_advanced_mailer_sending_method_is_invalid');
+			throw new Rhymix\Framework\Exception('msg_advanced_mailer_sending_method_is_invalid');
 		}
 		
 		// Validate the mail driver settings.
@@ -551,7 +549,7 @@ class adminAdminController extends admin
 			$conf_value = $vars->{'mail_' . $mail_driver . '_' . $conf_name} ?: null;
 			if (!$conf_value)
 			{
-				return $this->setError('msg_advanced_mailer_smtp_host_is_invalid');
+				throw new Rhymix\Framework\Exception('msg_advanced_mailer_smtp_host_is_invalid');
 			}
 			$mail_driver_config[$conf_name] = $conf_value;
 		}
@@ -561,7 +559,7 @@ class adminAdminController extends admin
 		$sms_driver = $vars->sms_driver;
 		if (!array_key_exists($sms_driver, $sms_drivers))
 		{
-			return $this->setError('msg_advanced_mailer_sending_method_is_invalid');
+			throw new Rhymix\Framework\Exception('msg_advanced_mailer_sending_method_is_invalid');
 		}
 		
 		// Validate the SMS driver settings.
@@ -571,7 +569,7 @@ class adminAdminController extends admin
 			$conf_value = $vars->{'sms_' . $sms_driver . '_' . $conf_name} ?: null;
 			if (!$conf_value)
 			{
-				return $this->setError('msg_advanced_mailer_smtp_host_is_invalid');
+				throw new Rhymix\Framework\Exception('msg_advanced_mailer_smtp_host_is_invalid');
 			}
 			$sms_driver_config[$conf_name] = $conf_value;
 		}
@@ -610,7 +608,7 @@ class adminAdminController extends admin
 		Rhymix\Framework\Config::set("sms.allow_split.lms", toBool($vars->allow_split_lms));
 		if (!Rhymix\Framework\Config::save())
 		{
-			return $this->setError('msg_failed_to_save_config');
+			throw new Rhymix\Framework\Exception('msg_failed_to_save_config');
 		}
 		
 		$this->setMessage('success_updated');
@@ -665,7 +663,7 @@ class adminAdminController extends admin
 			return $item !== '';
 		}));
 		if (!Rhymix\Framework\Filters\IpFilter::validateRanges($allowed_ip)) {
-			return $this->setError('msg_invalid_ip');
+			throw new Rhymix\Framework\Exception('msg_invalid_ip');
 		}
 		
 		$denied_ip = array_map('trim', preg_split('/[\r\n]/', $vars->admin_denied_ip));
@@ -673,13 +671,13 @@ class adminAdminController extends admin
 			return $item !== '';
 		}));
 		if (!Rhymix\Framework\Filters\IpFilter::validateRanges($denied_ip)) {
-			return $this->setError('msg_invalid_ip');
+			throw new Rhymix\Framework\Exception('msg_invalid_ip');
 		}
 		
 		$oMemberAdminModel = getAdminModel('member');
 		if (!$oMemberAdminModel->getMemberAdminIPCheck($allowed_ip, $denied_ip))
 		{
-			return $this->setError('msg_current_ip_will_be_denied');
+			throw new Rhymix\Framework\Exception('msg_current_ip_will_be_denied');
 		}
 		
 		Rhymix\Framework\Config::set('admin.allow', array_values($allowed_ip));
@@ -691,7 +689,7 @@ class adminAdminController extends admin
 		// Save
 		if (!Rhymix\Framework\Config::save())
 		{
-			return $this->setError('msg_failed_to_save_config');
+			throw new Rhymix\Framework\Exception('msg_failed_to_save_config');
 		}
 		
 		$this->setMessage('success_updated');
@@ -734,7 +732,7 @@ class adminAdminController extends admin
 			}
 			if (!Rhymix\Framework\Cache::getDriverInstance($vars->object_cache_type, $cache_servers))
 			{
-				return $this->setError('msg_cache_handler_not_supported');
+				throw new Rhymix\Framework\Exception('msg_cache_handler_not_supported');
 			}
 			Rhymix\Framework\Config::set('cache', array(
 				'type' => $vars->object_cache_type,
@@ -794,7 +792,7 @@ class adminAdminController extends admin
 		// Save
 		if (!Rhymix\Framework\Config::save())
 		{
-			return $this->setError('msg_failed_to_save_config');
+			throw new Rhymix\Framework\Exception('msg_failed_to_save_config');
 		}
 		
 		$this->setMessage('success_updated');
@@ -832,15 +830,15 @@ class adminAdminController extends admin
 		), $log_filename);
 		if (file_exists(RX_BASEDIR . $log_filename_today) && !is_writable(RX_BASEDIR . $log_filename_today))
 		{
-			return $this->setError('msg_debug_log_filename_not_writable');
+			throw new Rhymix\Framework\Exception('msg_debug_log_filename_not_writable');
 		}
 		if (!file_exists(dirname(RX_BASEDIR . $log_filename)) && !FileHandler::makeDir(dirname(RX_BASEDIR . $log_filename)))
 		{
-			return $this->setError('msg_debug_log_filename_not_writable');
+			throw new Rhymix\Framework\Exception('msg_debug_log_filename_not_writable');
 		}
 		if (!is_writable(dirname(RX_BASEDIR . $log_filename)))
 		{
-			return $this->setError('msg_debug_log_filename_not_writable');
+			throw new Rhymix\Framework\Exception('msg_debug_log_filename_not_writable');
 		}
 		Rhymix\Framework\Config::set('debug.log_filename', $log_filename);
 		
@@ -850,14 +848,14 @@ class adminAdminController extends admin
 			return $item !== '';
 		}));
 		if (!Rhymix\Framework\Filters\IpFilter::validateRanges($allowed_ip)) {
-			return $this->setError('msg_invalid_ip');
+			throw new Rhymix\Framework\Exception('msg_invalid_ip');
 		}
 		Rhymix\Framework\Config::set('debug.allow', array_values($allowed_ip));
 		
 		// Save
 		if (!Rhymix\Framework\Config::save())
 		{
-			return $this->setError('msg_failed_to_save_config');
+			throw new Rhymix\Framework\Exception('msg_failed_to_save_config');
 		}
 		
 		$this->setMessage('success_updated');
@@ -890,7 +888,7 @@ class adminAdminController extends admin
 		// Save
 		if (!Rhymix\Framework\Config::save())
 		{
-			return $this->setError('msg_failed_to_save_config');
+			throw new Rhymix\Framework\Exception('msg_failed_to_save_config');
 		}
 		
 		$this->setMessage('success_updated');
@@ -911,7 +909,7 @@ class adminAdminController extends admin
 		
 		if (!Rhymix\Framework\Filters\IpFilter::validateRanges($allowed_ip))
 		{
-			return $this->setError('msg_invalid_ip');
+			throw new Rhymix\Framework\Exception('msg_invalid_ip');
 		}
 		
 		Rhymix\Framework\Config::set('lock.locked', $vars->sitelock_locked === 'Y');
@@ -920,7 +918,7 @@ class adminAdminController extends admin
 		Rhymix\Framework\Config::set('lock.allow', array_values($allowed_ip));
 		if (!Rhymix\Framework\Config::save())
 		{
-			return $this->setError('msg_failed_to_save_config');
+			throw new Rhymix\Framework\Exception('msg_failed_to_save_config');
 		}
 		
 		$this->setMessage('success_updated');
@@ -941,7 +939,7 @@ class adminAdminController extends admin
 			$domain_info = getModel('module')->getSiteInfo($domain_srl);
 			if ($domain_info->domain_srl != $domain_srl)
 			{
-				return $this->setError('msg_domain_not_found');
+				throw new Rhymix\Framework\Exception('msg_domain_not_found');
 			}
 		}
 		
@@ -950,7 +948,7 @@ class adminAdminController extends admin
 		$vars->subtitle = utf8_trim($vars->subtitle);
 		if ($vars->title === '')
 		{
-			return $this->setError('msg_site_title_is_empty');
+			throw new Rhymix\Framework\Exception('msg_site_title_is_empty');
 		}
 		
 		// Validate the domain.
@@ -968,12 +966,12 @@ class adminAdminController extends admin
 		}
 		if (!$vars->domain)
 		{
-			return $this->setError('msg_invalid_domain');
+			throw new Rhymix\Framework\Exception('msg_invalid_domain');
 		}
 		$existing_domain = getModel('module')->getSiteInfoByDomain($vars->domain);
 		if ($existing_domain && $existing_domain->domain == $vars->domain && (!$domain_info || $existing_domain->domain_srl != $domain_info->domain_srl))
 		{
-			return $this->setError('msg_domain_already_exists');
+			throw new Rhymix\Framework\Exception('msg_domain_already_exists');
 		}
 		
 		// Validate the ports.
@@ -987,11 +985,11 @@ class adminAdminController extends admin
 		}
 		if ($vars->http_port !== 0 && ($vars->http_port < 1 || $vars->http_port > 65535 || $vars->http_port == 443))
 		{
-			return $this->setError('msg_invalid_http_port');
+			throw new Rhymix\Framework\Exception('msg_invalid_http_port');
 		}
 		if ($vars->https_port !== 0 && ($vars->https_port < 1 || $vars->https_port > 65535 || $vars->https_port == 80))
 		{
-			return $this->setError('msg_invalid_https_port');
+			throw new Rhymix\Framework\Exception('msg_invalid_https_port');
 		}
 		
 		// Validate the security setting.
@@ -1005,7 +1003,7 @@ class adminAdminController extends admin
 		$module_info = getModel('module')->getModuleInfoByModuleSrl(intval($vars->index_module_srl));
 		if (!$module_info || $module_info->module_srl != $vars->index_module_srl)
 		{
-			return $this->setError('msg_invalid_index_module_srl');
+			throw new Rhymix\Framework\Exception('msg_invalid_index_module_srl');
 		}
 		
 		// Validate the index document setting.
@@ -1014,11 +1012,11 @@ class adminAdminController extends admin
 			$oDocument = getModel('document')->getDocument($vars->index_document_srl);
 			if (!$oDocument || !$oDocument->isExists())
 			{
-				return $this->setError('msg_invalid_index_document_srl');
+				throw new Rhymix\Framework\Exception('msg_invalid_index_document_srl');
 			}
 			if (intval($oDocument->get('module_srl')) !== intval($vars->index_module_srl))
 			{
-				return $this->setError('msg_invalid_index_document_srl_module_srl');
+				throw new Rhymix\Framework\Exception('msg_invalid_index_document_srl_module_srl');
 			}
 		}
 		else
@@ -1030,14 +1028,14 @@ class adminAdminController extends admin
 		$enabled_lang = Rhymix\Framework\Config::get('locale.enabled_lang');
 		if (!in_array($vars->default_lang, $enabled_lang))
 		{
-			return $this->setError('msg_lang_is_not_enabled');
+			throw new Rhymix\Framework\Exception('msg_lang_is_not_enabled');
 		}
 		
 		// Validate the default time zone.
 		$timezone_list = Rhymix\Framework\DateTime::getTimezoneList();
 		if (!isset($timezone_list[$vars->default_timezone]))
 		{
-			return $this->setError('msg_invalid_timezone');
+			throw new Rhymix\Framework\Exception('msg_invalid_timezone');
 		}
 		
 		// Clean up the header and footer scripts.
@@ -1160,16 +1158,16 @@ class adminAdminController extends admin
 		$domain_srl = strval(Context::get('domain_srl'));
 		if ($domain_srl === '')
 		{
-			return $this->setError('msg_domain_not_found');
+			throw new Rhymix\Framework\Exception('msg_domain_not_found');
 		}
 		$domain_info = getModel('module')->getSiteInfo($domain_srl);
 		if ($domain_info->domain_srl != $domain_srl)
 		{
-			return $this->setError('msg_domain_not_found');
+			throw new Rhymix\Framework\Exception('msg_domain_not_found');
 		}
 		if ($domain_info->is_default_domain === 'Y')
 		{
-			return $this->setError('msg_cannot_delete_default_domain');
+			throw new Rhymix\Framework\Exception('msg_cannot_delete_default_domain');
 		}
 		
 		// Delete the domain.
@@ -1202,19 +1200,19 @@ class adminAdminController extends admin
 		{
 			if (!($conn = @ftp_connect($vars->ftp_host, $vars->ftp_port, 3)))
 			{
-				return $this->setError('msg_ftp_not_connected');
+				throw new Rhymix\Framework\Exception('msg_ftp_not_connected');
 			}
 			if (!@ftp_login($conn, $vars->ftp_user, $vars->ftp_pass))
 			{
-				return $this->setError('msg_ftp_invalid_auth_info');
+				throw new Rhymix\Framework\Exception('msg_ftp_invalid_auth_info');
 			}
 			if (!@ftp_pasv($conn, $vars->ftp_pasv === 'Y'))
 			{
-				return $this->setError('msg_ftp_cannot_set_passive_mode');
+				throw new Rhymix\Framework\Exception('msg_ftp_cannot_set_passive_mode');
 			}
 			if (!@ftp_chdir($conn, $vars->ftp_path))
 			{
-				return $this->setError('msg_ftp_invalid_path');
+				throw new Rhymix\Framework\Exception('msg_ftp_invalid_path');
 			}
 			ftp_close($conn);
 		}
@@ -1222,23 +1220,23 @@ class adminAdminController extends admin
 		{
 			if (!function_exists('ssh2_connect'))
 			{
-				return $this->setError('disable_sftp_support');
+				throw new Rhymix\Framework\Exception('disable_sftp_support');
 			}
 			if (!($conn = ssh2_connect($vars->ftp_host, $vars->ftp_port)))
 			{
-				return $this->setError('msg_ftp_not_connected');
+				throw new Rhymix\Framework\Exception('msg_ftp_not_connected');
 			}
 			if (!@ssh2_auth_password($conn, $vars->ftp_user, $vars->ftp_pass))
 			{
-				return $this->setError('msg_ftp_invalid_auth_info');
+				throw new Rhymix\Framework\Exception('msg_ftp_invalid_auth_info');
 			}
 			if (!@($sftp = ssh2_sftp($conn)))
 			{
-				return $this->setError('msg_ftp_sftp_error');
+				throw new Rhymix\Framework\Exception('msg_ftp_sftp_error');
 			}
 			if (!@ssh2_sftp_stat($sftp, $vars->ftp_path . 'common/defaults/config.php'))
 			{
-				return $this->setError('msg_ftp_invalid_path');
+				throw new Rhymix\Framework\Exception('msg_ftp_invalid_path');
 			}
 			unset($sftp, $conn);
 		}
@@ -1253,7 +1251,7 @@ class adminAdminController extends admin
 		Rhymix\Framework\Config::set('ftp.sftp', $vars->ftp_sftp === 'Y');
 		if (!Rhymix\Framework\Config::save())
 		{
-			return $this->setError('msg_failed_to_save_config');
+			throw new Rhymix\Framework\Exception('msg_failed_to_save_config');
 		}
 		
 		$this->setMessage('success_updated');
@@ -1274,7 +1272,7 @@ class adminAdminController extends admin
 		Rhymix\Framework\Config::set('ftp.sftp', false);
 		if (!Rhymix\Framework\Config::save())
 		{
-			return $this->setError('msg_failed_to_save_config');
+			throw new Rhymix\Framework\Exception('msg_failed_to_save_config');
 		}
 		
 		$this->setMessage('success_deleted');
diff --git a/modules/admin/admin.admin.view.php b/modules/admin/admin.admin.view.php
index d8c7e060a..5650b4f05 100644
--- a/modules/admin/admin.admin.view.php
+++ b/modules/admin/admin.admin.view.php
@@ -36,11 +36,9 @@ class adminAdminView extends admin
 	function init()
 	{
 		// forbit access if the user is not an administrator
-		$oMemberModel = getModel('member');
-		$logged_info = $oMemberModel->getLoggedInfo();
-		if($logged_info->is_admin != 'Y')
+		if (!$this->user->isAdmin())
 		{
-			return $this->stop("admin.msg_is_not_administrator");
+			throw new Rhymix\Framework\Exceptions\NotPermitted('admin.msg_is_not_administrator');
 		}
 
 		// change into administration layout
@@ -629,7 +627,7 @@ class adminAdminView extends admin
 			$domain_info = getModel('module')->getSiteInfo($domain_srl);
 			if ($domain_info->domain_srl != $domain_srl)
 			{
-				return $this->setError('msg_domain_not_found');
+				throw new Rhymix\Framework\Exception('msg_domain_not_found');
 			}
 		}
 		Context::set('domain_info', $domain_info);
diff --git a/modules/adminlogging/adminlogging.controller.php b/modules/adminlogging/adminlogging.controller.php
index 2b6b330fb..98269664f 100644
--- a/modules/adminlogging/adminlogging.controller.php
+++ b/modules/adminlogging/adminlogging.controller.php
@@ -23,7 +23,7 @@ class adminloggingController extends adminlogging
 		$logged_info = $oMemberModel->getLoggedInfo();
 		if($logged_info->is_admin != 'Y')
 		{
-			return $this->stop("admin.msg_is_not_administrator");
+			throw new Rhymix\Framework\Exceptions\NotPermitted('admin.msg_is_not_administrator');
 		}
 	}
 
diff --git a/modules/advanced_mailer/advanced_mailer.admin.controller.php b/modules/advanced_mailer/advanced_mailer.admin.controller.php
index 66de18923..3e575e3fe 100644
--- a/modules/advanced_mailer/advanced_mailer.admin.controller.php
+++ b/modules/advanced_mailer/advanced_mailer.admin.controller.php
@@ -61,7 +61,7 @@ class Advanced_MailerAdminController extends Advanced_Mailer
 			{
 				if ($method !== 'default' && !isset($sending_methods[$method]))
 				{
-					return $this->setError('msg_advanced_mailer_sending_method_is_invalid');
+					throw new Rhymix\Framework\Exception('msg_advanced_mailer_sending_method_is_invalid');
 				}
 				if ($method !== 'default')
 				{
@@ -69,7 +69,7 @@ class Advanced_MailerAdminController extends Advanced_Mailer
 					{
 						if (!Rhymix\Framework\Config::get("mail.$method.$conf_name"))
 						{
-							return $this->setError('msg_advanced_mailer_sending_method_is_not_configured', lang('cmd_advanced_mailer_sending_method_' . $method));
+							throw new Rhymix\Framework\Exception(sprintf('msg_advanced_mailer_sending_method_is_not_configured', lang('cmd_advanced_mailer_sending_method_' . $method)));
 						}
 					}
 				}
@@ -155,11 +155,11 @@ class Advanced_MailerAdminController extends Advanced_Mailer
 		$clear_before_days = intval(Context::get('clear_before_days'));
 		if (!in_array($status, array('success', 'error')))
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		if ($clear_before_days < 0)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		$obj = new stdClass();
@@ -186,11 +186,11 @@ class Advanced_MailerAdminController extends Advanced_Mailer
 		$clear_before_days = intval(Context::get('clear_before_days'));
 		if (!in_array($status, array('success', 'error')))
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		if ($clear_before_days < 0)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		$obj = new stdClass();
diff --git a/modules/autoinstall/autoinstall.admin.view.php b/modules/autoinstall/autoinstall.admin.view.php
index 77f660fee..0f9cb7ec4 100644
--- a/modules/autoinstall/autoinstall.admin.view.php
+++ b/modules/autoinstall/autoinstall.admin.view.php
@@ -414,7 +414,7 @@ class autoinstallAdminView extends autoinstall
 
 		if(!$updateDate)
 		{
-			return $this->stop('msg_connection_fail');
+			throw new Rhymix\Framework\Exception('msg_connection_fail');
 		}
 
 		$oModel = getModel('autoinstall');
@@ -535,13 +535,13 @@ class autoinstallAdminView extends autoinstall
 
 		if(!$type || $type == "core")
 		{
-			return $this->stop("msg_invalid_request");
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$config_file = $oModel->getConfigFilePath($type);
 		if(!$config_file)
 		{
-			return $this->stop("msg_invalid_request");
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$output = $oAdminModel->checkUseDirectModuleInstall($installedPackage);
@@ -579,7 +579,7 @@ class autoinstallAdminView extends autoinstall
 		}
 		else
 		{
-			return $this->stop('msg_connection_fail');
+			throw new Rhymix\Framework\Exception('msg_connection_fail');
 		}
 	}
 
diff --git a/modules/board/board.admin.controller.php b/modules/board/board.admin.controller.php
index 58d7709b8..112cb9c47 100644
--- a/modules/board/board.admin.controller.php
+++ b/modules/board/board.admin.controller.php
@@ -168,7 +168,7 @@ class boardAdminController extends board {
 		$module_info = $oModuleModel->getModuleInfoByModuleSrl($module_srl);
 		if($module_info->mid != $mid)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$module_info->hide_category = Context::get('hide_category') == 'Y' ? 'Y' : 'N';
diff --git a/modules/board/board.admin.view.php b/modules/board/board.admin.view.php
index 2a0c7f130..75cf3ce11 100644
--- a/modules/board/board.admin.view.php
+++ b/modules/board/board.admin.view.php
@@ -39,7 +39,10 @@ class boardAdminView extends board {
 			}
 		}
 
-		if($module_info && $module_info->module != 'board') return $this->stop("msg_invalid_request");
+		if($module_info && $module_info->module != 'board')
+		{
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
+		}
 
 		// get the module category list
 		$module_category = $oModuleModel->getModuleCategories();
diff --git a/modules/board/board.controller.php b/modules/board/board.controller.php
index 671a1dbbc..d0775c016 100644
--- a/modules/board/board.controller.php
+++ b/modules/board/board.controller.php
@@ -24,7 +24,7 @@ class boardController extends board
 		// check grant
 		if(!$this->grant->write_document)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		
 		// setup variables
@@ -35,14 +35,14 @@ class boardController extends board
 		// Return error if content is empty.
 		if (is_empty_html_content($obj->content))
 		{
-			return $this->setError('msg_empty_content');
+			throw new Rhymix\Framework\Exception('msg_empty_content');
 		}
 		
 		// Return error if content is too large.
 		$document_length_limit = ($this->module_info->document_length_limit ?: 1024) * 1024;
 		if (strlen($obj->content) > $document_length_limit && !$this->grant->manager)
 		{
-			return $this->setError('msg_content_too_long');
+			throw new Rhymix\Framework\Exception('msg_content_too_long');
 		}
 		
 		// unset document style if not manager
@@ -107,14 +107,14 @@ class boardController extends board
 		{
 			if(!$oDocument->isGranted())
 			{
-				return $this->setError('msg_not_permitted');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 			
 			// Protect admin document
 			$member_info = getModel('member')->getMemberInfoByMemberSrl($oDocument->get('member_srl'));
 			if($member_info->is_admin == 'Y' && $logged_info->is_admin != 'Y')
 			{
-				return $this->setError('msg_admin_document_no_modify');
+				throw new Rhymix\Framework\Exception('msg_admin_document_no_modify');
 			}
 			
 			// if document status is temp
@@ -138,7 +138,7 @@ class boardController extends board
 				{
 					if($oDocument->get('comment_count') > 0 && !$this->grant->manager)
 					{
-						return $this->setError('msg_protect_update_content');
+						throw new Rhymix\Framework\Exception('msg_protect_update_content');
 					}
 				}
 				
@@ -147,7 +147,7 @@ class boardController extends board
 				{
 					if($oDocument->get('regdate') < date('YmdHis', strtotime('-' . $this->module_info->protect_document_regdate . ' day')))
 					{
-						return $this->setError(sprintf(lang('msg_protect_regdate_document'), $this->module_info->protect_document_regdate));
+						throw new Rhymix\Framework\Exception(sprintf(lang('msg_protect_regdate_document'), $this->module_info->protect_document_regdate));
 					}
 				}
 				
@@ -235,7 +235,7 @@ class boardController extends board
 		$logged_info = Context::get('logged_info');
 		if(!$update_id)
 		{
-			return $this->setError('msg_no_update_id');
+			throw new Rhymix\Framework\Exception('msg_no_update_id');
 		}
 
 		$oDocumentModel = getModel('document');
@@ -247,13 +247,13 @@ class boardController extends board
 			$Exists_log = $oDocumentModel->getUpdateLogAdminisExists($update_log->document_srl);
 			if($Exists_log === true)
 			{
-				return $this->setError('msg_admin_update_log');
+				throw new Rhymix\Framework\Exception('msg_admin_update_log');
 			}
 		}
 
 		if(!$update_log)
 		{
-			return $this->setError('msg_no_update_log');
+			throw new Rhymix\Framework\Exception('msg_no_update_log');
 		}
 
 		$oDocument = $oDocumentModel->getDocument($update_log->document_srl);
@@ -282,7 +282,7 @@ class boardController extends board
 		// if the document is not existed
 		if(!$document_srl)
 		{
-			return $this->setError('msg_invalid_document');
+			throw new Rhymix\Framework\Exception('msg_invalid_document');
 		}
 
 		$oDocumentModel = &getModel('document');
@@ -292,7 +292,7 @@ class boardController extends board
 		{
 			if($oDocument->get('comment_count') > 0 && $this->grant->manager == false)
 			{
-				return $this->setError('msg_protect_delete_content');
+				throw new Rhymix\Framework\Exception('msg_protect_delete_content');
 			}
 		}
 
@@ -302,7 +302,7 @@ class boardController extends board
 			{
 				$format =  lang('msg_protect_regdate_document');
 				$massage = sprintf($format, $this->module_info->protect_document_regdate);
-				return $this->setError($massage);
+				throw new Rhymix\Framework\Exception($massage);
 			}
 		}
 		// generate document module controller object
@@ -356,7 +356,7 @@ class boardController extends board
 		// check grant
 		if(!$this->grant->write_comment)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		$logged_info = Context::get('logged_info');
 
@@ -367,14 +367,14 @@ class boardController extends board
 		// Return error if content is empty.
 		if (is_empty_html_content($obj->content))
 		{
-			return $this->setError('msg_empty_content');
+			throw new Rhymix\Framework\Exception('msg_empty_content');
 		}
 
 		// Return error if content is too large.
 		$comment_length_limit = ($this->module_info->comment_length_limit ?: 128) * 1024;
 		if (strlen($obj->content) > $comment_length_limit && !$this->grant->manager)
 		{
-			return $this->setError('msg_content_too_long');
+			throw new Rhymix\Framework\Exception('msg_content_too_long');
 		}
 		
 		if(!$this->module_info->use_status) $this->module_info->use_status = 'PUBLIC';
@@ -398,7 +398,7 @@ class boardController extends board
 		$oDocument = $oDocumentModel->getDocument($obj->document_srl);
 		if(!$oDocument->isExists())
 		{
-			return $this->setError('msg_not_founded');
+			throw new Rhymix\Framework\Exceptions\TargetNotFound;
 		}
 
 		// For anonymous use, remove writer's information and notifying information
@@ -436,7 +436,7 @@ class boardController extends board
 				$childs = $oCommentModel->getChildComments($obj->comment_srl);
 				if(count($childs) > 0)
 				{
-					return $this->setError('msg_board_update_protect_comment');
+					throw new Rhymix\Framework\Exception('msg_board_update_protect_comment');
 				}
 			}
 		}
@@ -446,7 +446,7 @@ class boardController extends board
 
 		if($member_info->is_admin == 'Y' && $logged_info->is_admin != 'Y')
 		{
-			return $this->setError('msg_admin_comment_no_modify');
+			throw new Rhymix\Framework\Exception('msg_admin_comment_no_modify');
 		}
 
 		// INSERT if comment_srl does not exist.
@@ -461,7 +461,7 @@ class boardController extends board
 				$parent_comment = $oCommentModel->getComment($obj->parent_srl);
 				if(!$parent_comment->comment_srl)
 				{
-					return $this->setError('msg_invalid_request');
+					throw new Rhymix\Framework\Exceptions\TargetNotFound;
 				}
 				if($parent_comment->isSecret() && $this->module_info->secret === 'Y')
 				{
@@ -490,13 +490,13 @@ class boardController extends board
 				{
 					$format =  lang('msg_protect_regdate_comment');
 					$massage = sprintf($format, $this->module_info->protect_document_regdate);
-					return $this->setError($massage);
+					throw new Rhymix\Framework\Exception($massage);
 				}
 			}
 			// check the grant
 			if(!$comment->isGranted())
 			{
-				return $this->setError('msg_not_permitted');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 			$obj->parent_srl = $comment->parent_srl;
 			$output = $oCommentController->updateComment($obj, $this->grant->manager);
@@ -530,7 +530,7 @@ class boardController extends board
 
 		if(!$comment_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oCommentModel = getModel('comment');
@@ -540,7 +540,7 @@ class boardController extends board
 			$childs = $oCommentModel->getChildComments($comment_srl);
 			if(count($childs) > 0)
 			{
-				return $this->setError('msg_board_delete_protect_comment');
+				throw new Rhymix\Framework\Exception('msg_board_delete_protect_comment');
 			}
 		}
 		$comment = $oCommentModel->getComment($comment_srl, $this->grant->manager);
@@ -550,7 +550,7 @@ class boardController extends board
 			{
 				$format =  lang('msg_protect_regdate_comment');
 				$massage = sprintf($format, $this->module_info->protect_document_regdate);
-				return $this->setError($massage);
+				throw new Rhymix\Framework\Exception($massage);
 			}
 		}
 		// generate comment  controller object
@@ -662,13 +662,13 @@ class boardController extends board
 			$oComment = $oCommentModel->getComment($comment_srl);
 			if(!$oComment->isExists())
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\TargetNotFound;
 			}
 
 			// compare the comment password and the user input password
 			if(!$oMemberModel->isValidPassword($oComment->get('password'),$password))
 			{
-				return $this->setError('msg_invalid_password');
+				throw new Rhymix\Framework\Exception('msg_invalid_password');
 			}
 
 			$oComment->setGrantForSession();
@@ -678,13 +678,13 @@ class boardController extends board
 			$oDocument = $oDocumentModel->getDocument($document_srl);
 			if(!$oDocument->isExists())
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\TargetNotFound;
 			}
 
 			// compare the document password and the user input password
 			if(!$oMemberModel->isValidPassword($oDocument->get('password'),$password))
 			{
-				return $this->setError('msg_invalid_password');
+				throw new Rhymix\Framework\Exception('msg_invalid_password');
 			}
 
 			$oDocument->setGrantForSession();
diff --git a/modules/board/board.view.php b/modules/board/board.view.php
index ea6b5f1be..6f0ddc597 100644
--- a/modules/board/board.view.php
+++ b/modules/board/board.view.php
@@ -262,7 +262,7 @@ class boardView extends board
 				// if the module srl is not consistent
 				if($oDocument->get('module_srl')!=$this->module_info->module_srl )
 				{
-					return $this->stop('msg_invalid_request');
+					throw new Rhymix\Framework\Exceptions\TargetNotFound;
 				}
 
 				// check the manage grant
@@ -383,7 +383,11 @@ class boardView extends board
 
 		if(is_array($file_module_config->download_grant) && $downloadGrantCount>0)
 		{
-			if(!Context::get('is_logged')) return $this->stop('msg_not_permitted_download');
+			if(!Context::get('is_logged'))
+			{
+				throw new Rhymix\Framework\Exceptions\NotPermitted('msg_not_permitted_download');
+			}
+			
 			$logged_info = Context::get('logged_info');
 			if($logged_info->is_admin != 'Y')
 			{
@@ -406,7 +410,10 @@ class boardView extends board
 							break;
 						}
 					}
-					if(!$is_permitted) return $this->stop('msg_not_permitted_download');
+					if(!$is_permitted)
+					{
+						throw new Rhymix\Framework\Exceptions\NotPermitted('msg_not_permitted_download');
+					}
 				}
 			}
 		}
@@ -672,18 +679,18 @@ class boardView extends board
 		$document_srl = Context::get('document_srl');
 		if(!$document_srl)
 		{
-			return $this->setError("msg_invalid_request");
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		if($this->grant->view == false || ($this->module_info->consultation == 'Y' && !$this->grant->manager && !$this->grant->consultation_read))
 		{
-			return $this->setError("msg_not_permitted");
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		
 		$oDocument = getModel('document')->getDocument($document_srl);
 		if(!$oDocument->isExists())
 		{
-			return $this->setError("msg_invalid_request");
+			throw new Rhymix\Framework\Exceptions\TargetNotFound;
 		}
 		Context::set('oDocument', $oDocument);
 		
@@ -780,20 +787,20 @@ class boardView extends board
 				{
 					$format =  lang('msg_protect_regdate_document');
 					$massage = sprintf($format, $this->module_info->protect_document_regdate);
-					return $this->setError($massage);
+					throw new Rhymix\Framework\Exception($massage);
 				}
 			}
 			if($this->module_info->protect_content == "Y" || $this->module_info->protect_update_content == 'Y')
 			{
 				if($oDocument->get('comment_count') > 0 && $this->grant->manager == false)
 				{
-					return $this->setError('msg_protect_update_content');
+					throw new Rhymix\Framework\Exception('msg_protect_update_content');
 				}
 			}
 		}
 		if($member_info->is_admin == 'Y' && $logged_info->is_admin != 'Y')
 		{
-			return $this->setError('msg_admin_document_no_modify');
+			throw new Rhymix\Framework\Exception('msg_admin_document_no_modify');
 		}
 
 		// if the document is not granted, then back to the password input form
@@ -913,7 +920,7 @@ class boardView extends board
 			{
 				$format =  lang('msg_protect_regdate_document');
 				$massage = sprintf($format, $this->module_info->protect_document_regdate);
-				return $this->setError($massage);
+				throw new Rhymix\Framework\Exception($massage);
 			}
 		}
 
@@ -921,7 +928,7 @@ class boardView extends board
 		{
 			if($oDocument->get('comment_count')>0 && $this->grant->manager == false)
 			{
-				return $this->setError('msg_protect_delete_content');
+				throw new Rhymix\Framework\Exception('msg_protect_delete_content');
 			}
 		}
 
@@ -953,7 +960,7 @@ class boardView extends board
 		$oDocument = $oDocumentModel->getDocument($document_srl);
 		if(!$oDocument->isExists())
 		{
-			return $this->dispBoardMessage('msg_invalid_request');
+			return $this->dispBoardMessage('msg_not_founded');
 		}
 
 		// Check allow comment
@@ -998,7 +1005,7 @@ class boardView extends board
 		// if the parent comment is not existed
 		if(!$parent_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// get the comment
@@ -1008,11 +1015,11 @@ class boardView extends board
 		// if the comment is not existed, opoup an error message
 		if(!$oSourceComment->isExists())
 		{
-			return $this->dispBoardMessage('msg_invalid_request');
+			return $this->dispBoardMessage('msg_not_founded');
 		}
 		if(Context::get('document_srl') && $oSourceComment->get('document_srl') != Context::get('document_srl'))
 		{
-			return $this->dispBoardMessage('msg_invalid_request');
+			return $this->dispBoardMessage('msg_not_founded');
 		}
 
 		// Check allow comment
@@ -1060,7 +1067,7 @@ class boardView extends board
 		// if the comment is not existed
 		if(!$comment_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// get comment information
@@ -1075,7 +1082,7 @@ class boardView extends board
 			{
 				$format =  lang('msg_protect_regdate_comment');
 				$massage = sprintf($format, $this->module_info->protect_document_regdate);
-				return $this->setError($massage);
+				throw new Rhymix\Framework\Exception($massage);
 			}
 		}
 		if($this->module_info->protect_update_comment === 'Y' && $this->grant->manager == false)
@@ -1083,19 +1090,19 @@ class boardView extends board
 			$childs = $oCommentModel->getChildComments($comment_srl);
 			if(count($childs) > 0)
 			{
-				return $this->setError('msg_board_update_protect_comment');
+				throw new Rhymix\Framework\Exception('msg_board_update_protect_comment');
 			}
 		}
 
 		if($member_info->is_admin == 'Y' && $logged_info->is_admin != 'Y')
 		{
-			return $this->setError('msg_admin_comment_no_modify');
+			throw new Rhymix\Framework\Exception('msg_admin_comment_no_modify');
 		}
 
 		// if the comment is not exited, alert an error message
 		if(!$oComment->isExists())
 		{
-			return $this->dispBoardMessage('msg_invalid_request');
+			return $this->dispBoardMessage('msg_not_founded');
 		}
 
 		// if the comment is not granted, then back to the password input form
@@ -1143,7 +1150,7 @@ class boardView extends board
 			{
 				$format =  lang('msg_protect_regdate_comment');
 				$massage = sprintf($format, $this->module_info->protect_document_regdate);
-				return $this->setError($massage);
+				throw new Rhymix\Framework\Exception($massage);
 			}
 		}
 
@@ -1153,7 +1160,7 @@ class boardView extends board
 			$childs = $oCommentModel->getChildComments($comment_srl);
 			if(count($childs) > 0)
 			{
-				return $this->setError('msg_board_delete_protect_comment');
+				throw new Rhymix\Framework\Exception('msg_board_delete_protect_comment');
 			}
 		}
 
@@ -1233,7 +1240,7 @@ class boardView extends board
 
 		if($this->grant->update_view !== true)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 
 		$updatelog = $oDocumentModel->getDocumentUpdateLog($document_srl);
@@ -1253,7 +1260,7 @@ class boardView extends board
 
 		if($this->grant->update_view !== true)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 
 		$update_log = $oDocumentModel->getUpdateLog($update_id);
@@ -1289,7 +1296,7 @@ class boardView extends board
 	{
 		iF($this->grant->vote_log_view !== true)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 
 		$oMemberModel = getModel('member');
@@ -1310,7 +1317,7 @@ class boardView extends board
 		}
 		else
 		{
-			return $this->setError('msg_not_target');
+			throw new Rhymix\Framework\Exception('msg_not_target');
 		}
 
 		$output = executeQueryArray($queryId, $args);
diff --git a/modules/comment/comment.admin.controller.php b/modules/comment/comment.admin.controller.php
index 9ad5709eb..183746461 100644
--- a/modules/comment/comment.admin.controller.php
+++ b/modules/comment/comment.admin.controller.php
@@ -56,7 +56,7 @@ class commentAdminController extends comment
 		$cart = Context::get('cart');
 		if(!$cart)
 		{
-			return $this->stop('msg_cart_is_null');
+			throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		}
 		if(!is_array($cart))
 		{
@@ -96,7 +96,7 @@ class commentAdminController extends comment
 				$comment = $oCommentModel->getComment($comment_srl);
 				if($comment->comment_srl != $comment_srl)
 				{
-					return $this->setError('msg_invalid_request');
+					throw new Rhymix\Framework\Exceptions\InvalidRequest;
 				}
 				$document_srl = $comment->document_srl;
 				if(!in_array($document_srl, $updated_documents_arr))
@@ -171,7 +171,7 @@ class commentAdminController extends comment
 		$cart = Context::get('cart');
 		if(!$cart)
 		{
-			return $this->stop('msg_cart_is_null');
+			throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		}
 		if(!is_array($cart))
 		{
@@ -184,7 +184,7 @@ class commentAdminController extends comment
 		$comment_count = count($comment_srl_list);
 		if(!$comment_count)
 		{
-			return $this->stop('msg_cart_is_null');
+			throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		}
 
 		$oCommentController = getController('comment');
@@ -329,7 +329,7 @@ class commentAdminController extends comment
 		$oCommentController = getController('comment');
 		$oComment = $oCommentModel->getComment($comment_srl, false);
 
-		if(!$oComment->isGranted()) return $this->stop('msg_not_permitted');
+		if(!$oComment->isGranted()) throw new Rhymix\Framework\Exceptions\NotPermitted;
 
 		$message_content = "";
 		$this->_moveCommentToTrash(array($comment_srl), $oCommentController, $oDB, $message_content);
diff --git a/modules/comment/comment.controller.php b/modules/comment/comment.controller.php
index 46f3399bc..08f3e9c84 100644
--- a/modules/comment/comment.controller.php
+++ b/modules/comment/comment.controller.php
@@ -27,15 +27,18 @@ class commentController extends comment
 	 */
 	function procCommentVoteUp()
 	{
-		if(!Context::get('is_logged'))
+		if($this->module_info->non_login_vote !== 'Y')
 		{
-			return $this->setError('msg_invalid_request');
+			if(!Context::get('is_logged'))
+			{
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
+			}
 		}
 
 		$comment_srl = Context::get('target_srl');
 		if(!$comment_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oCommentModel = getModel('comment');
@@ -43,14 +46,14 @@ class commentController extends comment
 		$module_srl = $oComment->get('module_srl');
 		if(!$module_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oModuleModel = getModel('module');
 		$comment_config = $oModuleModel->getModulePartConfig('comment', $module_srl);
 		if($comment_config->use_vote_up == 'N')
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 		}
 
 		$point = 1;
@@ -61,16 +64,22 @@ class commentController extends comment
 
 	function procCommentVoteUpCancel()
 	{
-		if(!Context::get('logged_info')) return $this->setError('msg_invalid_request');
+		if($this->module_info->non_login_vote !== 'Y')
+		{
+			if(!Context::get('is_logged'))
+			{
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
+			}
+		}
 
 		$comment_srl = Context::get('target_srl');
-		if(!$comment_srl) return $this->setError('msg_invalid_request');
+		if(!$comment_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oCommentModel = getModel('comment');
 		$oComment = $oCommentModel->getComment($comment_srl, FALSE, FALSE);
 		if($oComment->get('voted_count') <= 0)
 		{
-			return $this->setError('msg_comment_voted_cancel_not');
+			throw new Rhymix\Framework\Exception('msg_comment_voted_cancel_not');
 		}
 		$point = 1;
 		$output = $this->updateVotedCountCancel($comment_srl, $oComment, $point);
@@ -88,15 +97,18 @@ class commentController extends comment
 	 */
 	function procCommentVoteDown()
 	{
-		if(!Context::get('is_logged'))
+		if($this->module_info->non_login_vote !== 'Y')
 		{
-			return $this->setError('msg_invalid_request');
+			if(!Context::get('is_logged'))
+			{
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
+			}
 		}
 
 		$comment_srl = Context::get('target_srl');
 		if(!$comment_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oCommentModel = getModel('comment');
@@ -104,14 +116,14 @@ class commentController extends comment
 		$module_srl = $oComment->get('module_srl');
 		if(!$module_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oModuleModel = getModel('module');
 		$comment_config = $oModuleModel->getModulePartConfig('comment', $module_srl);
 		if($comment_config->use_vote_down == 'N')
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 		}
 
 		$point = -1;
@@ -122,16 +134,22 @@ class commentController extends comment
 
 	function procCommentVoteDownCancel()
 	{
-		if(!Context::get('logged_info')) return $this->setError('msg_invalid_request');
+		if($this->module_info->non_login_vote !== 'Y')
+		{
+			if(!Context::get('is_logged'))
+			{
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
+			}
+		}
 
 		$comment_srl = Context::get('target_srl');
-		if(!$comment_srl) return $this->setError('msg_invalid_request');
+		if(!$comment_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oCommentModel = getModel('comment');
 		$oComment = $oCommentModel->getComment($comment_srl, FALSE, FALSE);
 		if($oComment->get('blamed_count') >= 0)
 		{
-			return $this->setError('msg_comment_blamed_cancel_not');
+			throw new Rhymix\Framework\Exception('msg_comment_blamed_cancel_not');
 		}
 		$point = -1;
 		$output = $this->updateVotedCountCancel($comment_srl, $oComment, $point);
@@ -193,13 +211,13 @@ class commentController extends comment
 	{
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 
 		$comment_srl = Context::get('target_srl');
 		if(!$comment_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// if an user select message from options, message would be the option.
@@ -297,7 +315,7 @@ class commentController extends comment
 	{
 		if(!$manual_inserted && !checkCSRF())
 		{
-			return new BaseObject(-1, 'msg_invalid_request');
+			return new BaseObject(-1, 'msg_security_violation');
 		}
 
 		if(!is_object($obj))
@@ -699,7 +717,7 @@ class commentController extends comment
 	{
 		if(!$manual_updated && !checkCSRF())
 		{
-			return new BaseObject(-1, 'msg_invalid_request');
+			return new BaseObject(-1, 'msg_security_violation');
 		}
 
 		if(!is_object($obj))
@@ -1653,13 +1671,13 @@ class commentController extends comment
 			$module_info = $oModuleModel->getModuleInfoByModuleSrl($srl);
 			if (!$module_info->module_srl)
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\InvalidRequest;
 			}
 			
 			$module_grant = $oModuleModel->getGrant($module_info, $logged_info);
 			if (!$module_grant->manager)
 			{
-				return $this->setError('msg_not_permitted');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 			
 			$module_srl[] = $srl;
@@ -1727,7 +1745,7 @@ class commentController extends comment
 	{
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 
 		$commentSrls = Context::get('comment_srls');
diff --git a/modules/comment/comment.model.php b/modules/comment/comment.model.php
index 2db5e9084..127454b10 100644
--- a/modules/comment/comment.model.php
+++ b/modules/comment/comment.model.php
@@ -977,7 +977,7 @@ class commentModel extends comment
 		$comment_srl = Context::get('comment_srl');
 		if(!$comment_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$point = Context::get('point');
@@ -991,7 +991,7 @@ class commentModel extends comment
 		$module_srl = $oComment->get('module_srl');
 		if(!$module_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oModuleModel = getModel('module');
@@ -1003,7 +1003,7 @@ class commentModel extends comment
 		{
 			if($comment_config->use_vote_down != 'S')
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 			}
 
 			$args->below_point = 0;
@@ -1012,7 +1012,7 @@ class commentModel extends comment
 		{
 			if($comment_config->use_vote_up != 'S')
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 			}
 
 			$args->more_point = 0;
diff --git a/modules/comment/comment.view.php b/modules/comment/comment.view.php
index c19d142cf..85052b8f9 100644
--- a/modules/comment/comment.view.php
+++ b/modules/comment/comment.view.php
@@ -73,7 +73,7 @@ class commentView extends comment
 		// A message appears if the user is not logged-in
 		if(!$oMemberModel->isLogged())
 		{
-			return $this->stop('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		// Create the comment object.
@@ -82,12 +82,12 @@ class commentView extends comment
 		$oComment = $oCommentModel->getComment($comment_srl);
 		if(!$oComment->isExists())
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\TargetNotFound;
 		}
 		// Check permissions
 		if(!$oComment->isAccessible())
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 
 		// Browser title settings
diff --git a/modules/communication/communication.controller.php b/modules/communication/communication.controller.php
index ebd7b382c..c4088dc68 100644
--- a/modules/communication/communication.controller.php
+++ b/modules/communication/communication.controller.php
@@ -24,7 +24,7 @@ class communicationController extends communication
 	{
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$args = new stdClass();
@@ -54,7 +54,7 @@ class communicationController extends communication
 		// Check login information
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -63,19 +63,19 @@ class communicationController extends communication
 		$receiver_srl = Context::get('receiver_srl');
 		if(!$receiver_srl)
 		{
-			return $this->setError('msg_not_exists_member');
+			throw new Rhymix\Framework\Exception('msg_not_exists_member');
 		}
 
 		$title = trim(Context::get('title'));
 		if(!$title)
 		{
-			return $this->setError('msg_title_is_null');
+			throw new Rhymix\Framework\Exception('msg_title_is_null');
 		}
 
 		$content = trim(Context::get('content'));
 		if(!$content)
 		{
-			return $this->setError('msg_content_is_null');
+			throw new Rhymix\Framework\Exception('msg_content_is_null');
 		}
 
 		$send_mail = Context::get('send_mail');
@@ -91,13 +91,13 @@ class communicationController extends communication
 
 		if(!$oCommunicationModel->checkGrant($config->grant_send))
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 
 		$receiver_member_info = $oMemberModel->getMemberInfoByMemberSrl($receiver_srl);
 		if($receiver_member_info->member_srl != $receiver_srl)
 		{
-			return $this->setError('msg_not_exists_member');
+			throw new Rhymix\Framework\Exception('msg_not_exists_member');
 		}
 
 		// check whether to allow to receive the message(pass if a top-administrator)
@@ -107,12 +107,12 @@ class communicationController extends communication
 			{
 				if(!$oCommunicationModel->isFriend($receiver_member_info->member_srl))
 				{
-					return $this->setError('msg_allow_message_to_friend');
+					throw new Rhymix\Framework\Exception('msg_allow_message_to_friend');
 				}
 			}
 			else if($receiver_member_info->allow_message == 'N')
 			{
-				return $this->setError('msg_disallow_message');
+				throw new Rhymix\Framework\Exception('msg_disallow_message');
 			}
 		}
 
@@ -269,7 +269,7 @@ class communicationController extends communication
 		// Check login information
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 		$logged_info = Context::get('logged_info');
 
@@ -277,7 +277,7 @@ class communicationController extends communication
 		$message_srl = Context::get('message_srl');
 		if(!$message_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// get the message
@@ -285,7 +285,7 @@ class communicationController extends communication
 		$message = $oCommunicationModel->getSelectedMessage($message_srl);
 		if(!$message || $message->message_type != 'R')
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$args = new stdClass();
@@ -309,7 +309,7 @@ class communicationController extends communication
 		// Check login information
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -319,7 +319,7 @@ class communicationController extends communication
 		$message_srl = Context::get('message_srl');
 		if(!$message_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// Get the message
@@ -327,7 +327,7 @@ class communicationController extends communication
 		$message = $oCommunicationModel->getSelectedMessage($message_srl);
 		if(!$message)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// Check the grant
@@ -336,14 +336,14 @@ class communicationController extends communication
 			case 'S':
 				if($message->sender_srl != $member_srl)
 				{
-					return $this->setError('msg_invalid_request');
+					throw new Rhymix\Framework\Exceptions\InvalidRequest;
 				}
 				break;
 
 			case 'R':
 				if($message->receiver_srl != $member_srl)
 				{
-					return $this->setError('msg_invalid_request');
+					throw new Rhymix\Framework\Exceptions\InvalidRequest;
 				}
 				break;
 		}
@@ -369,7 +369,7 @@ class communicationController extends communication
 		// Check login information
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -378,7 +378,7 @@ class communicationController extends communication
 		// check variables
 		if(!Context::get('message_srl_list'))
 		{
-			return $this->setError('msg_cart_is_null');
+			throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		}
 
 		$message_srl_list = Context::get('message_srl_list');
@@ -389,13 +389,13 @@ class communicationController extends communication
 
 		if(!count($message_srl_list))
 		{
-			return $this->setError('msg_cart_is_null');
+			throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		}
 
 		$message_type = Context::get('message_type');
 		if(!$message_type || !in_array($message_type, array('R', 'S', 'T', 'N')))
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$message_count = count($message_srl_list);
@@ -412,7 +412,7 @@ class communicationController extends communication
 		}
 		if(!count($target))
 		{
-			return $this->setError('msg_cart_is_null');
+			throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		}
 
 		// Delete
@@ -458,7 +458,7 @@ class communicationController extends communication
 		// Check login information
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -466,11 +466,11 @@ class communicationController extends communication
 		$target_srl = (int) trim(Context::get('target_srl'));
 		if(!$target_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		if($target_srl == $logged_info->member_srl)
 		{
-			return $this->setError('msg_no_self_friend');
+			throw new Rhymix\Framework\Exception('msg_no_self_friend');
 		}
 		
 		// Check duplicate friend
@@ -480,7 +480,7 @@ class communicationController extends communication
 		$output = executeQuery('communication.isAddedFriend', $args);
 		if($output->data->count)
 		{
-			return $this->setError('msg_already_friend');
+			throw new Rhymix\Framework\Exception('msg_already_friend');
 		}
 
 		// Variable
@@ -520,7 +520,7 @@ class communicationController extends communication
 		// Check login information
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -529,7 +529,7 @@ class communicationController extends communication
 		$friend_srl_list = Context::get('friend_srl_list');
 		if(!$friend_srl_list)
 		{
-			return $this->setError('msg_cart_is_null');
+			throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		}
 
 		if(!is_array($friend_srl_list))
@@ -539,7 +539,7 @@ class communicationController extends communication
 
 		if(!count($friend_srl_list))
 		{
-			return $this->setError('msg_cart_is_null');
+			throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		}
 
 		$friend_count = count($friend_srl_list);
@@ -557,7 +557,7 @@ class communicationController extends communication
 
 		if(!count($target))
 		{
-			return $this->setError('msg_cart_is_null');
+			throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		}
 
 		// Variables
@@ -587,7 +587,7 @@ class communicationController extends communication
 		// Check login information
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -603,7 +603,7 @@ class communicationController extends communication
 
 		if(!count($friend_srl_list))
 		{
-			return $this->setError('msg_cart_is_null');
+			throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		}
 
 		$friend_count = count($friend_srl_list);
@@ -622,7 +622,7 @@ class communicationController extends communication
 
 		if(!count($target))
 		{
-			return $this->setError('msg_cart_is_null');
+			throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		}
 
 		// Delete
@@ -650,7 +650,7 @@ class communicationController extends communication
 		// Check login information
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -664,7 +664,7 @@ class communicationController extends communication
 
 		if(!$args->title)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// modify if friend_group_srl exists.
@@ -726,7 +726,7 @@ class communicationController extends communication
 		// Check login information
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -740,7 +740,7 @@ class communicationController extends communication
 
 		if(!$args->title)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$output = executeQuery('communication.renameFriendGroup', $args);
@@ -761,7 +761,7 @@ class communicationController extends communication
 		// Check login information
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
diff --git a/modules/communication/communication.view.php b/modules/communication/communication.view.php
index e447e8543..8a43b1c48 100644
--- a/modules/communication/communication.view.php
+++ b/modules/communication/communication.view.php
@@ -52,13 +52,13 @@ class communicationView extends communication
 	{
 		if($this->config->enable_message == 'N')
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// Error appears if not logged-in
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -86,28 +86,28 @@ class communicationView extends communication
 				case 'R':
 					if($message->receiver_srl != $logged_info->member_srl)
 					{
-						return $this->setError('msg_invalid_request');
+						throw new Rhymix\Framework\Exceptions\InvalidRequest;
 					}
 					break;
 
 				case 'S':
 					if($message->sender_srl != $logged_info->member_srl)
 					{
-						return $this->setError('msg_invalid_request');
+						throw new Rhymix\Framework\Exceptions\InvalidRequest;
 					}
 					break;
 
 				case 'T':
 					if($message->receiver_srl != $logged_info->member_srl && $message->sender_srl != $logged_info->member_srl)
 					{
-						return $this->setError('msg_invalid_request');
+						throw new Rhymix\Framework\Exceptions\InvalidRequest;
 					}
 					break;
 
 				case 'N':
 					if($message->receiver_srl != $logged_info->member_srl)
 					{
-						return $this->setError('msg_invalid_request');
+						throw new Rhymix\Framework\Exceptions\InvalidRequest;
 					}
 					break;
 			}
@@ -151,13 +151,13 @@ class communicationView extends communication
 
 		if($this->config->enable_message == 'N')
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// Error appears if not logged-in
 		if(!Context::get('is_logged'))
 		{
-			return $this->stop('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -190,17 +190,17 @@ class communicationView extends communication
 
 		if($this->config->enable_message == 'N')
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		if(!getModel('communication')->checkGrant($this->config->grant_send))
 		{
-			return $this->stop('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		
 		// Error appears if not logged-in
 		if(!Context::get('is_logged'))
 		{
-			return $this->stop('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -210,13 +210,13 @@ class communicationView extends communication
 		$receiver_srl = Context::get('receiver_srl');
 		if(!$receiver_srl)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// check receiver and sender are same
 		if($logged_info->member_srl == $receiver_srl)
 		{
-			return $this->stop('msg_cannot_send_to_yourself');
+			throw new Rhymix\Framework\Exception('msg_cannot_send_to_yourself');
 		}
 
 		$oCommunicationModel = getModel('communication');
@@ -241,7 +241,7 @@ class communicationView extends communication
 		$receiver_info = $oMemberModel->getMemberInfoByMemberSrl($receiver_srl);
 		if(!$receiver_info)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		Context::set('receiver_info', $receiver_info);
@@ -275,13 +275,13 @@ class communicationView extends communication
 	{
 		if($this->config->enable_friend == 'N')
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// Error appears if not logged-in
 		if(!Context::get('is_logged'))
 		{
-			return $this->stop('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 		
 		$oCommunicationModel = getModel('communication');
@@ -339,13 +339,13 @@ class communicationView extends communication
 		
 		if($this->config->enable_friend == 'N')
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// error appears if not logged-in
 		if(!Context::get('is_logged'))
 		{
-			return $this->stop('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -353,11 +353,11 @@ class communicationView extends communication
 
 		if(!$target_srl)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		if($target_srl == $logged_info->member_srl)
 		{
-			return $this->stop('msg_no_self_friend');
+			throw new Rhymix\Framework\Exception('msg_no_self_friend');
 		}
 
 		// get information of the member
@@ -367,7 +367,7 @@ class communicationView extends communication
 
 		if($communication_info->member_srl != $target_srl)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		Context::set('target_info', $communication_info);
@@ -390,13 +390,13 @@ class communicationView extends communication
 		
 		if($this->config->enable_friend == 'N')
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// error apprears if not logged-in
 		if(!Context::get('is_logged'))
 		{
-			return $this->stop('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
diff --git a/modules/document/document.admin.controller.php b/modules/document/document.admin.controller.php
index c190ba84d..e54bd2065 100644
--- a/modules/document/document.admin.controller.php
+++ b/modules/document/document.admin.controller.php
@@ -27,10 +27,10 @@ class documentAdminController extends document
 	{
 		// error appears if no doc is selected
 		$cart = Context::get('cart');
-		if(!$cart) return $this->stop('msg_cart_is_null');
+		if(!$cart) throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		$document_srl_list= explode('|@|', $cart);
 		$document_count = count($document_srl_list);
-		if(!$document_count) return $this->stop('msg_cart_is_null');
+		if(!$document_count) throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		// Delete a doc
 		$oDocumentController = getController('document');
 		for($i=0;$i<$document_count;$i++)
@@ -140,7 +140,7 @@ class documentAdminController extends document
 		$eid = Context::get('eid');
 		$obj = new stdClass();
 
-		if(!$module_srl || !$name || !$eid) return $this->setError('msg_invalid_request');
+		if(!$module_srl || !$name || !$eid) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// set the max value if idx is not specified
 		if(!$var_idx)
 		{
@@ -156,7 +156,7 @@ class documentAdminController extends document
 		$output = executeQuery('document.isExistsExtraKey', $obj);
 		if(!$output->toBool() || $output->data->count)
 		{
-			return $this->setError('msg_extra_name_exists');
+			throw new Rhymix\Framework\Exception('msg_extra_name_exists');
 		}
 
 		// insert or update
@@ -178,7 +178,7 @@ class documentAdminController extends document
 	{
 		$module_srl = Context::get('module_srl');
 		$var_idx = Context::get('var_idx');
-		if(!$module_srl || !$var_idx) return $this->setError('msg_invalid_request');
+		if(!$module_srl || !$var_idx) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oDocumentController = getController('document');
 		$output = $oDocumentController->deleteDocumentExtraKeys($module_srl, $var_idx);
@@ -197,26 +197,26 @@ class documentAdminController extends document
 		$module_srl = Context::get('module_srl');
 		$var_idx = Context::get('var_idx');
 
-		if(!$type || !$module_srl || !$var_idx) return $this->setError('msg_invalid_request');
+		if(!$type || !$module_srl || !$var_idx) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oModuleModel = getModel('module');
 		$module_info = $oModuleModel->getModuleInfoByModuleSrl($module_srl);
-		if(!$module_info->module_srl) return $this->setError('msg_invalid_request');
+		if(!$module_info->module_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oDocumentModel = getModel('document');
 		$extra_keys = $oDocumentModel->getExtraKeys($module_srl);
-		if(!$extra_keys[$var_idx]) return $this->setError('msg_invalid_request');
+		if(!$extra_keys[$var_idx]) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		if($type == 'up') $new_idx = $var_idx-1;
 		else $new_idx = $var_idx+1;
-		if($new_idx<1) return $this->setError('msg_invalid_request');
+		if($new_idx<1) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$args = new stdClass();
 		$args->module_srl = $module_srl;
 		$args->var_idx = $new_idx;
 		$output = executeQuery('document.getDocumentExtraKeys', $args);
 		if (!$output->toBool()) return $output;
-		if (!$output->data) return $this->setError('msg_invalid_request');
+		if (!$output->data) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		unset($args);
 
 		// update immediately if there is no idx to change
@@ -314,13 +314,16 @@ class documentAdminController extends document
 		$oDocumentModel = getModel('document');
 		$oDocumentController = getController('document');
 		$oDocument = $oDocumentModel->getDocument($document_srl, false, false);
-		if(!$oDocument->isGranted()) return $this->stop('msg_not_permitted');
+		if(!$oDocument->isGranted())
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
+		}
 
 		$oMemberModel = getModel('member');
 		$member_info = $oMemberModel->getMemberInfoByMemberSrl($oDocument->get('member_srl'));
 		if($member_info->is_admin == 'Y' && $logged_info->is_admin != 'Y')
 		{
-			return $this->setError('msg_admin_document_no_move_to_trash');
+			throw new Rhymix\Framework\Exception('msg_admin_document_no_move_to_trash');
 		}
 
 		$oModuleModel = getModel('module');
@@ -635,7 +638,7 @@ class documentAdminController extends document
 
 		//DB restore
 		$output = $oDocumentController->insertDocument($originObject, false, true, false);
-		if(!$output->toBool()) return $this->setError($output->getMessage());
+		if(!$output->toBool()) return $output;
 
 		//FILE restore
 		$oDocument = $oDocumentModel->getDocument($originObject->document_srl);
diff --git a/modules/document/document.controller.php b/modules/document/document.controller.php
index 875a25e97..2f03e19db 100644
--- a/modules/document/document.controller.php
+++ b/modules/document/document.controller.php
@@ -28,21 +28,21 @@ class documentController extends document
 		{
 			if(!Context::get('is_logged'))
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 		}
 
 		$document_srl = Context::get('target_srl');
-		if(!$document_srl) return $this->setError('msg_invalid_request');
+		if(!$document_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oDocumentModel = getModel('document');
 		$oDocument = $oDocumentModel->getDocument($document_srl, false, false);
 		$module_srl = $oDocument->get('module_srl');
-		if(!$module_srl) return $this->setError('msg_invalid_request');
+		if(!$module_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oModuleModel = getModel('module');
 		$document_config = $oModuleModel->getModulePartConfig('document',$module_srl);
-		if($document_config->use_vote_up=='N') return $this->setError('msg_invalid_request');
+		if($document_config->use_vote_up=='N') throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 
 		$point = 1;
 		$output = $this->updateVotedCount($document_srl, $point);
@@ -60,18 +60,18 @@ class documentController extends document
 		{
 			if(!Context::get('is_logged'))
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 		}
 
 		$document_srl = Context::get('target_srl');
-		if(!$document_srl) return $this->setError('msg_invalid_request');
+		if(!$document_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oDocumentModel = getModel('document');
 		$oDocument = $oDocumentModel->getDocument($document_srl, false, false);
 		if($oDocument->get('voted_count') <= 0)
 		{
-			return $this->setError('msg_document_voted_cancel_not');
+			throw new Rhymix\Framework\Exception('msg_document_voted_cancel_not');
 		}
 		$point = 1;
 		$output = $this->updateVotedCountCancel($document_srl, $oDocument, $point);
@@ -114,21 +114,21 @@ class documentController extends document
 		{
 			if(!Context::get('is_logged'))
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 		}
 
 		$document_srl = Context::get('target_srl');
-		if(!$document_srl) return $this->setError('msg_invalid_request');
+		if(!$document_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oDocumentModel = getModel('document');
 		$oDocument = $oDocumentModel->getDocument($document_srl, false, false);
 		$module_srl = $oDocument->get('module_srl');
-		if(!$module_srl) return $this->setError('msg_invalid_request');
+		if(!$module_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oModuleModel = getModel('module');
 		$document_config = $oModuleModel->getModulePartConfig('document',$module_srl);
-		if($document_config->use_vote_down=='N') return $this->setError('msg_invalid_request');
+		if($document_config->use_vote_down=='N') throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 
 		$point = -1;
 		$output = $this->updateVotedCount($document_srl, $point);
@@ -146,18 +146,18 @@ class documentController extends document
 		{
 			if(!Context::get('is_logged'))
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 		}
 
 		$document_srl = Context::get('target_srl');
-		if(!$document_srl) return $this->setError('msg_invalid_request');
+		if(!$document_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oDocumentModel = getModel('document');
 		$oDocument = $oDocumentModel->getDocument($document_srl, false, false);
 		if($oDocument->get('blamed_count') >= 0)
 		{
-			return $this->setError('msg_document_voted_cancel_not');
+			throw new Rhymix\Framework\Exception('msg_document_voted_cancel_not');
 		}
 		$point = -1;
 		$output = $this->updateVotedCountCancel($document_srl, $oDocument, $point);
@@ -229,13 +229,13 @@ class documentController extends document
 	{
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$document_srl = intval(Context::get('target_srl'));
 		if(!$document_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// if an user select message from options, message would be the option.
@@ -347,7 +347,7 @@ class documentController extends document
 	{
 		if(!$manual_inserted && !checkCSRF())
 		{
-			return new BaseObject(-1, 'msg_invalid_request');
+			return new BaseObject(-1, 'msg_security_violation');
 		}
 
 		// begin transaction
@@ -576,7 +576,7 @@ class documentController extends document
 	{
 		if(!$manual_updated && !checkCSRF())
 		{
-			return new BaseObject(-1, 'msg_invalid_request');
+			return new BaseObject(-1, 'msg_security_violation');
 		}
 		
 		if(!$source_obj->document_srl || !$obj->document_srl) return new BaseObject(-1, 'msg_invalied_request');
@@ -2495,7 +2495,10 @@ class documentController extends document
 	 */
 	function procDocumentAddCart()
 	{
-		if(!Context::get('is_logged')) return $this->setError('msg_not_permitted');
+		if(!Context::get('is_logged'))
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
+		}
 
 		// Get document_srl
 		$srls = explode(',',Context::get('srls'));
@@ -2587,12 +2590,12 @@ class documentController extends document
 			$module_info = getModel('module')->getModuleInfoByModuleSrl($obj->target_module_srl);
 			if (!$module_info->module_srl)
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\InvalidRequest;
 			}
 			$module_grant = getModel('module')->getGrant($module_info, $logged_info);
 			if (!$module_grant->manager)
 			{
-				return $this->setError('msg_not_permitted');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 		}
 		
@@ -2608,7 +2611,7 @@ class documentController extends document
 		$obj->document_list = getModel('document')->getDocuments($obj->document_srl_list, false, false);
 		if(empty($obj->document_list))
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// Call a trigger (before)
@@ -2623,7 +2626,7 @@ class documentController extends document
 		{
 			if(!$obj->target_module_srl)
 			{
-				return $this->setError('fail_to_move');
+				throw new Rhymix\Framework\Exception('fail_to_move');
 			}
 			
 			$output = $oController->moveDocumentModule($obj->document_srl_list, $obj->target_module_srl, $obj->target_category_srl);
@@ -2638,7 +2641,7 @@ class documentController extends document
 		{
 			if(!$obj->target_module_srl)
 			{
-				return $this->setError('fail_to_move');
+				throw new Rhymix\Framework\Exception('fail_to_move');
 			}
 			
 			$output = $oController->copyDocumentModule($obj->document_srl_list, $obj->target_module_srl, $obj->target_category_srl);
@@ -2695,7 +2698,7 @@ class documentController extends document
 		}
 		else
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// Call a trigger (after)
@@ -2764,13 +2767,13 @@ Content;
 			$module_info = $oModuleModel->getModuleInfoByModuleSrl($srl);
 			if (!$module_info->module_srl)
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\InvalidRequest;
 			}
 			
 			$module_grant = $oModuleModel->getGrant($module_info, $logged_info);
 			if (!$module_grant->manager)
 			{
-				return $this->setError('msg_not_permitted');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 			
 			$module_srl[] = $srl;
@@ -2811,7 +2814,7 @@ Content;
 	{
 		if(!$this->module_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		$obj = Context::getRequestVars();
@@ -2834,12 +2837,12 @@ Content;
 		{
 			if(!$oDocument->isGranted())
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 			
 			if($oDocument->get('status') != $this->getConfigStatus('temp'))
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\InvalidRequest;
 			}
 			
 			$output = $this->updateDocument($oDocument, $obj);
@@ -2871,7 +2874,11 @@ Content;
 	 */
 	function procDocumentGetList()
 	{
-		if(!Context::get('is_logged')) return $this->setError('msg_not_permitted');
+		if(!Context::get('is_logged'))
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
+		}
+		
 		$documentSrls = Context::get('document_srls');
 		if($documentSrls) $documentSrlList = explode(',', $documentSrls);
 
diff --git a/modules/document/document.model.php b/modules/document/document.model.php
index 1684981d4..b505d5add 100644
--- a/modules/document/document.model.php
+++ b/modules/document/document.model.php
@@ -448,7 +448,7 @@ class documentModel extends document
 			$oDocument = $oDocumentModel->getDocument($document_srl, false, false, $columnList);
 			$module_srl = $oDocument->get('module_srl');
 			$member_srl = $oDocument->get('member_srl');
-			if(!$module_srl) return $this->setError('msg_invalid_request');
+			if(!$module_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 			$oModuleModel = getModel('module');
 			$document_config = $oModuleModel->getModulePartConfig('document',$module_srl);
@@ -855,7 +855,7 @@ class documentModel extends document
 	 */
 	function getDocumentCategories()
 	{
-		if(!Context::get('is_logged')) return $this->setError('msg_not_permitted');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\NotPermitted;
 		$module_srl = Context::get('module_srl');
 		$categories= $this->getCategoryList($module_srl);
 		$lang = Context::get('lang');
@@ -950,13 +950,13 @@ class documentModel extends document
 		$module_info = $oModuleModel->getModuleInfoByModuleSrl($module_srl);
 		// Check permissions
 		$grant = $oModuleModel->getGrant($module_info, Context::get('logged_info'));
-		if(!$grant->manager) return $this->setError('msg_not_permitted');
+		if(!$grant->manager) throw new Rhymix\Framework\Exceptions\NotPermitted;
 
 		$category_srl = Context::get('category_srl');
 		$category_info = $this->getCategory($category_srl);
 		if(!$category_info)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$this->add('category_info', $category_info);
@@ -1138,7 +1138,7 @@ class documentModel extends document
 	{
 		$args = new stdClass;
 		$document_srl = Context::get('document_srl');
-		if(!$document_srl) return $this->setError('msg_invalid_request');
+		if(!$document_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$point = Context::get('point');
 		if($point != -1) $point = 1;
@@ -1147,18 +1147,18 @@ class documentModel extends document
 		$columnList = array('document_srl', 'module_srl');
 		$oDocument = $oDocumentModel->getDocument($document_srl, false, false, $columnList);
 		$module_srl = $oDocument->get('module_srl');
-		if(!$module_srl) return $this->setError('msg_invalid_request');
+		if(!$module_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oModuleModel = getModel('module');
 		$document_config = $oModuleModel->getModulePartConfig('document',$module_srl);
 		if($point == -1)
 		{
-			if($document_config->use_vote_down!='S') return $this->setError('msg_invalid_request');
+			if($document_config->use_vote_down!='S') throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 			$args->below_point = 0;
 		}
 		else
 		{
-			if($document_config->use_vote_up!='S') return $this->setError('msg_invalid_request');
+			if($document_config->use_vote_up!='S') throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 			$args->more_point = 0;
 		}
 
diff --git a/modules/document/document.view.php b/modules/document/document.view.php
index a7aac9c9d..24ddf25ab 100644
--- a/modules/document/document.view.php
+++ b/modules/document/document.view.php
@@ -36,9 +36,9 @@ class documentView extends document
 		$oDocumentModel = getModel('document');
 		// Creates an object for displaying the selected document
 		$oDocument = $oDocumentModel->getDocument($document_srl, $this->grant->manager);
-		if(!$oDocument->isExists()) return $this->setError('msg_invalid_request');
+		if(!$oDocument->isExists()) throw new Rhymix\Framework\Exceptions\TargetNotFound;
 		// Check permissions
-		if(!$oDocument->isAccessible()) return $this->setError('msg_not_permitted');
+		if(!$oDocument->isAccessible()) throw new Rhymix\Framework\Exceptions\NotPermitted;
 		// Information setting module
 		//Context::set('module_info', $module_info);	//module_info not use in UI
 		// Browser title settings
@@ -58,7 +58,7 @@ class documentView extends document
 	{
 		if(!checkCSRF())
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\SecurityViolation;
 		} 
 		
 		$content = Context::get('content');
@@ -87,7 +87,7 @@ class documentView extends document
 	 */
 	function dispDocumentManageDocument()
 	{
-		if(!Context::get('is_logged')) return $this->setError('msg_not_permitted');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\NotPermitted;
 		// Taken from a list of selected sessions
 		$flag_list = $_SESSION['document_management'];
 		if(count($flag_list))
@@ -172,7 +172,10 @@ class documentView extends document
 
 		$oMemberModel = getModel('member');
 		// A message appears if the user is not logged-in
-		if(!$oMemberModel->isLogged()) return $this->stop('msg_not_logged');
+		if(!$oMemberModel->isLogged())
+		{
+			throw new Rhymix\Framework\Exceptions\MustLogin;
+		}
 		// Get the saved document (module_srl is set to member_srl instead)
 		$logged_info = Context::get('logged_info');
 		$args = new stdClass();
@@ -206,7 +209,7 @@ class documentView extends document
 		// A message appears if the user is not logged-in
 		if(!$oMemberModel->isLogged())
 		{
-			return $this->stop('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		// Create the document object. If the document module of basic data structures, write it all works .. -_-;
@@ -215,12 +218,12 @@ class documentView extends document
 		$oDocument = $oDocumentModel->getDocument($document_srl, $this->grant->manager, FALSE);
 		if(!$oDocument->isExists())
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\TargetNotFound;
 		}
 		// Check permissions
 		if(!$oDocument->isAccessible())
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 
 		// Browser title settings
diff --git a/modules/editor/editor.admin.controller.php b/modules/editor/editor.admin.controller.php
index df3949fb7..674420585 100644
--- a/modules/editor/editor.admin.controller.php
+++ b/modules/editor/editor.admin.controller.php
@@ -250,9 +250,18 @@ class editorAdminController extends editor
 		$args->enabled = $enabled;
 		$args->site_srl = $site_srl;
 		// Check if the component exists
-		if(!$site_srl) $output = executeQuery('editor.isComponentInserted', $args);
-		else $output = executeQuery('editor.isSiteComponentInserted', $args);
-		if($output->data->count) return $this->setError('msg_component_is_not_founded');
+		if(!$site_srl)
+		{
+			$output = executeQuery('editor.isComponentInserted', $args);
+		}
+		else
+		{
+			$output = executeQuery('editor.isSiteComponentInserted', $args);
+		}
+		if($output->data->count)
+		{
+			return new BaseObject(-1, 'msg_component_is_not_founded');
+		}
 		// Inert a component
 		$args->list_order = getNextSequence();
 		if(!$site_srl) $output = executeQuery('editor.insertComponent', $args);
diff --git a/modules/editor/editor.admin.view.php b/modules/editor/editor.admin.view.php
index 06b4eae66..a2aadde52 100644
--- a/modules/editor/editor.admin.view.php
+++ b/modules/editor/editor.admin.view.php
@@ -106,9 +106,9 @@ class editorAdminView extends editor
 		$oEditorModel = getModel('editor');
 		$component = $oEditorModel->getComponent($component_name,$site_srl);
 
-		if(!$component->component_name) {
-			$this->stop('msg_invalid_request');
-			return;
+		if(!$component->component_name)
+		{
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		Context::set('component', $component);
diff --git a/modules/editor/editor.controller.php b/modules/editor/editor.controller.php
index 0e9925548..3c0ea9062 100644
--- a/modules/editor/editor.controller.php
+++ b/modules/editor/editor.controller.php
@@ -47,18 +47,23 @@ class editorController extends editor
 	{
 		$component = Context::get('component');
 		$method = Context::get('method');
-		if(!$component) return $this->setError('msg_component_is_not_founded', $component);
+		if(!$component)
+		{
+			throw new Rhymix\Framework\Exception('msg_component_is_not_founded', $component);
+		}
 
 		$oEditorModel = getModel('editor');
 		$oComponent = &$oEditorModel->getComponentObject($component);
 		if(!$oComponent->toBool()) return $oComponent;
 
-		if(!method_exists($oComponent, $method)) return $this->setError('msg_component_is_not_founded', $component);
+		if(!method_exists($oComponent, $method))
+		{
+			throw new Rhymix\Framework\Exception('msg_component_is_not_founded', $component);
+		}
 
 		//$output = call_user_method($method, $oComponent);
 		//$output = call_user_func(array($oComponent, $method));
-		if(method_exists($oComponent, $method)) $output = $oComponent->{$method}();
-		else return $this->setError('%s method is not exists', $method);
+		$output = $oComponent->{$method}();
 
 		if($output instanceof BaseObject && !$output->toBool()) return $output;
 
@@ -93,13 +98,13 @@ class editorController extends editor
 			$module_info = $oModuleModel->getModuleInfoByModuleSrl($srl);
 			if (!$module_info->module_srl)
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\InvalidRequest;
 			}
 
 			$module_grant = $oModuleModel->getGrant($module_info, $logged_info);
 			if (!$module_grant->manager)
 			{
-				return $this->setError('msg_not_permitted');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 
 			$module_srl[] = $srl;
diff --git a/modules/editor/editor.model.php b/modules/editor/editor.model.php
index bf9082de9..68995a569 100644
--- a/modules/editor/editor.model.php
+++ b/modules/editor/editor.model.php
@@ -492,11 +492,11 @@ class editorModel extends editor
 			// Create an object of the component and execute
 			$class_path = sprintf('%scomponents/%s/', $this->module_path, $component);
 			$class_file = sprintf('%s%s.class.php', $class_path, $component);
-			if(!file_exists($class_file)) return $this->setError('msg_component_is_not_founded', $component);
+			if(!file_exists($class_file)) return new BaseObject(-1, 'msg_component_is_not_founded', $component);
 			// Create an object after loading the class file
 			require_once($class_file);
 			$oComponent = new $component($editor_sequence, $class_path);
-			if(!$oComponent) return $this->setError('msg_component_is_not_founded', $component);
+			if(!$oComponent) return new BaseObject(-1, 'msg_component_is_not_founded', $component);
 			// Add configuration information
 			$component_info = $this->getComponent($component, $site_srl);
 			$oComponent->setInfo($component_info);
diff --git a/modules/editor/editor.view.php b/modules/editor/editor.view.php
index e1fbbb345..a13b84b6e 100644
--- a/modules/editor/editor.view.php
+++ b/modules/editor/editor.view.php
@@ -97,9 +97,9 @@ class editorView extends editor
 		$oEditorModel = getModel('editor');
 		$component = $oEditorModel->getComponent($component_name, $site_srl);
 
-		if(!$component->component_name) {
-			$this->stop('msg_invalid_request');
-			return;
+		if(!$component->component_name)
+		{
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		Context::set('component', $component);
diff --git a/modules/file/file.admin.controller.php b/modules/file/file.admin.controller.php
index 10f51c7df..46ba168a4 100644
--- a/modules/file/file.admin.controller.php
+++ b/modules/file/file.admin.controller.php
@@ -32,11 +32,11 @@ class fileAdminController extends file
 	{
 		// An error appears if no document is selected
 		$cart = Context::get('cart');
-		if(!$cart) return $this->stop('msg_file_cart_is_null');
+		if(!$cart) throw new Rhymix\Framework\Exception('msg_file_cart_is_null');
 		if(!is_array($cart)) $file_srl_list= explode('|@|', $cart);
 		else $file_srl_list = $cart;
 		$file_count = count($file_srl_list);
-		if(!$file_count) return $this->stop('msg_file_cart_is_null');
+		if(!$file_count) throw new Rhymix\Framework\Exception('msg_file_cart_is_null');
 
 		$oFileController = getController('file');
 		// Delete the post
@@ -76,7 +76,7 @@ class fileAdminController extends file
 		{
 			if ($config->allowed_filesize > 2047 || $config->allowed_attach_size > 2047)
 			{
-				return $this->setError('msg_32bit_max_2047mb');
+				throw new Rhymix\Framework\Exception('msg_32bit_max_2047mb');
 			}
 		}
 		
@@ -125,7 +125,7 @@ class fileAdminController extends file
 		{
 			if ($file_config->allowed_filesize > 2047 || $file_config->allowed_attach_size > 2047)
 			{
-				return $this->setError('msg_32bit_max_2047mb');
+				throw new Rhymix\Framework\Exception('msg_32bit_max_2047mb');
 			}
 		}
 		
diff --git a/modules/file/file.controller.php b/modules/file/file.controller.php
index 227b18499..0c165c264 100644
--- a/modules/file/file.controller.php
+++ b/modules/file/file.controller.php
@@ -39,7 +39,7 @@ class fileController extends file
 		// Exit a session if there is neither upload permission nor information
 		if(!$_SESSION['upload_info'][$editor_sequence]->enabled)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		
 		// Get upload_target_srl
@@ -63,7 +63,7 @@ class fileController extends file
 			$total_size = intval($matches[3]);
 			if ($chunk_start < 0 || $chunk_size < 0 || $total_size < 0 || $chunk_start + $chunk_size > $total_size || $chunk_size != $file_info['size'])
 			{
-				return $this->setError('msg_upload_invalid_chunk');
+				throw new Rhymix\Framework\Exception('msg_upload_invalid_chunk');
 			}
 			$this->add('chunk_current_size', $chunk_size);
 			$this->add('chunk_uploaded_size', $chunk_start);
@@ -76,13 +76,13 @@ class fileController extends file
 			{
 				Rhymix\Framework\Storage::delete($temp_filename);
 				$this->add('chunk_status', 11);
-				return $this->setError('msg_upload_invalid_chunk');
+				throw new Rhymix\Framework\Exception('msg_upload_invalid_chunk');
 			}
 			if ($chunk_start != 0 && (!Rhymix\Framework\Storage::isFile($temp_filename) || Rhymix\Framework\Storage::getSize($temp_filename) != $chunk_start))
 			{
 				Rhymix\Framework\Storage::delete($temp_filename);
 				$this->add('chunk_status', 12);
-				return $this->setError('msg_upload_invalid_chunk');
+				throw new Rhymix\Framework\Exception('msg_upload_invalid_chunk');
 			}
 			
 			// Check size limit
@@ -95,13 +95,13 @@ class fileController extends file
 				if ($total_size > $allowed_filesize)
 				{
 					$this->add('chunk_status', 21);
-					return $this->setError('msg_exceeds_limit_size');
+					throw new Rhymix\Framework\Exception('msg_exceeds_limit_size');
 				}
 				$output = executeQuery('file.getAttachedFileSize', (object)array('upload_target_srl' => $upload_target_srl));
 				if (intval($output->data->attached_size) + $total_size > $allowed_attach_size)
 				{
 					$this->add('chunk_status', 22);
-					return $this->setError('msg_exceeds_limit_size');
+					throw new Rhymix\Framework\Exception('msg_exceeds_limit_size');
 				}
 			}
 			
@@ -126,7 +126,7 @@ class fileController extends file
 			{
 				Rhymix\Framework\Storage::delete($temp_filename);
 				$this->add('chunk_status', 40);
-				return $this->setError('msg_upload_invalid_chunk');
+				throw new Rhymix\Framework\Exception('msg_upload_invalid_chunk');
 			}
 		}
 		else
@@ -145,7 +145,10 @@ class fileController extends file
 		$this->add('upload_target_srl', $output->get('upload_target_srl'));
 		$this->add('download_url', $oFileModel->getDirectFileUrl($output->get('uploaded_filename')));
 		
-		if($output->error != '0') $this->stop($output->message);
+		if($output->error != '0')
+		{
+			throw new Rhymix\Framework\Exception($output->message);
+		}
 	}
 
 	/**
@@ -207,14 +210,14 @@ class fileController extends file
 
 		if(!$file_srl || !$width)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oFileModel = getModel('file');
 		$fileInfo = $oFileModel->getFile($file_srl);
 		if(!$fileInfo || $fileInfo->direct_download != 'Y')
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$source_src = $fileInfo->uploaded_filename;
@@ -230,7 +233,7 @@ class fileController extends file
 		}
 		else
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$this->add('resized_info',$output);
@@ -271,7 +274,10 @@ class fileController extends file
 	{
 		$oFileModel = getModel('file');
 
-		if(isset($this->grant->access) && $this->grant->access !== true) return $this->setError('msg_not_permitted');
+		if(isset($this->grant->access) && $this->grant->access !== true)
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
+		}
 
 		$file_srl = Context::get('file_srl');
 		$sid = Context::get('sid');
@@ -280,9 +286,15 @@ class fileController extends file
 		$columnList = array('file_srl', 'sid', 'isvalid', 'source_filename', 'module_srl', 'uploaded_filename', 'file_size', 'member_srl', 'upload_target_srl', 'upload_target_type');
 		$file_obj = $oFileModel->getFile($file_srl, $columnList);
 		// If the requested file information is incorrect, an error that file cannot be found appears
-		if($file_obj->file_srl!=$file_srl || $file_obj->sid!=$sid) return $this->stop('msg_file_not_found');
+		if($file_obj->file_srl != $file_srl || $file_obj->sid !== $sid)
+		{
+			throw new Rhymix\Framework\Exceptions\TargetNotFound('msg_file_not_found');
+		}
 		// Notify that file download is not allowed when standing-by(Only a top-administrator is permitted)
-		if($logged_info->is_admin != 'Y' && $file_obj->isvalid!='Y') return $this->stop('msg_not_permitted_download');
+		if($logged_info->is_admin != 'Y' && $file_obj->isvalid != 'Y')
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted('msg_not_permitted_download');
+		}
 		// File name
 		$filename = $file_obj->source_filename;
 		$file_module_config = $oFileModel->getFileModuleConfig($file_obj->module_srl);
@@ -331,7 +343,10 @@ class fileController extends file
 				}
 				else $file_module_config->allow_outlink = 'Y';
 			}
-			if($file_module_config->allow_outlink != 'Y') return $this->stop('msg_not_allowed_outlink');
+			if($file_module_config->allow_outlink != 'Y')
+			{
+				throw new Rhymix\Framework\Exceptions\NotPermitted('msg_not_allowed_outlink');
+			}
 		}
 
 		// Check if a permission for file download is granted
@@ -344,7 +359,11 @@ class fileController extends file
 
 		if(is_array($file_module_config->download_grant) && $downloadGrantCount>0)
 		{
-			if(!Context::get('is_logged')) return $this->stop('msg_not_permitted_download');
+			if(!Context::get('is_logged'))
+			{
+				throw new Rhymix\Framework\Exceptions\NotPermitted('msg_not_permitted_download');
+			}
+			
 			$logged_info = Context::get('logged_info');
 			if($logged_info->is_admin != 'Y')
 			{
@@ -367,14 +386,27 @@ class fileController extends file
 							break;
 						}
 					}
-					if(!$is_permitted) return $this->stop('msg_not_permitted_download');
+					if(!$is_permitted)
+					{
+						throw new Rhymix\Framework\Exceptions\NotPermitted('msg_not_permitted_download');
+					}
 				}
 			}
 		}
 
 		// Call a trigger (before)
 		$output = ModuleHandler::triggerCall('file.downloadFile', 'before', $file_obj);
-		if(!$output->toBool()) return $this->stop(($output->message)?$output->message:'msg_not_permitted_download');
+		if(!$output->toBool())
+		{
+			if ($output->message)
+			{
+				throw new Rhymix\Framework\Exception($output->message);
+			}
+			else
+			{
+				throw new Rhymix\Framework\Exceptions\NotPermitted('msg_not_permitted_download');
+			}
+		}
 
 		// Increase download_count
 		$args = new stdClass();
@@ -413,20 +445,20 @@ class fileController extends file
 		// Check file key
 		if(strlen($file_key) != 32 || !isset($_SESSION['__XE_FILE_KEY__']) || !is_string($_SESSION['__XE_FILE_KEY__']))
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		$file_key_data = $file_srl . $file_obj->file_size . $file_obj->uploaded_filename . $_SERVER['REMOTE_ADDR'];
 		$file_key_compare = substr(hash_hmac('sha256', $file_key_data, $_SESSION['__XE_FILE_KEY__']), 0, 32);
 		if($file_key !== $file_key_compare)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// Check if file exists
 		$uploaded_filename = $file_obj->uploaded_filename;
 		if(!file_exists($uploaded_filename))
 		{
-			return $this->stop('msg_file_not_found');
+			throw new Rhymix\Framework\Exceptions\TargetNotFound('msg_file_not_found');
 		}
 
 		// If client sent an If-None-Match header with the correct ETag, do not download again
@@ -453,7 +485,7 @@ class fileController extends file
 		$fp = fopen($uploaded_filename, 'rb');
 		if(!$fp)
 		{
-			return $this->stop('msg_file_not_found');
+			throw new Rhymix\Framework\Exceptions\TargetNotFound('msg_file_not_found');
 		}
 
 		// Take care of pause and resume
@@ -586,11 +618,15 @@ class fileController extends file
 	 */
 	function procFileGetList()
 	{
-		if(!Context::get('is_logged')) return $this->setError('msg_not_permitted');
+		if(!Context::get('is_logged'))
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
+		}
+		
 		$logged_info = Context::get('logged_info');
 		if($logged_info->is_admin !== 'Y' && !getModel('module')->isSiteAdmin($logged_info))
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		
 		$fileSrls = Context::get('file_srls');
@@ -835,20 +871,20 @@ class fileController extends file
 
 					if(!in_array($uploaded_ext, $ext))
 					{
-						return $this->stop('msg_not_allowed_filetype');
+						throw new Rhymix\Framework\Exception('msg_not_allowed_filetype');
 					}
 				}
 
 				$allowed_filesize = $config->allowed_filesize * 1024 * 1024;
 				$allowed_attach_size = $config->allowed_attach_size * 1024 * 1024;
 				// An error appears if file size exceeds a limit
-				if($allowed_filesize < filesize($file_info['tmp_name'])) return $this->setError('msg_exceeds_limit_size');
+				if($allowed_filesize < filesize($file_info['tmp_name'])) throw new Rhymix\Framework\Exception('msg_exceeds_limit_size');
 				// Get total file size of all attachements (from DB)
 				$size_args = new stdClass;
 				$size_args->upload_target_srl = $upload_target_srl;
 				$output = executeQuery('file.getAttachedFileSize', $size_args);
 				$attached_size = (int)$output->data->attached_size + filesize($file_info['tmp_name']);
-				if($attached_size > $allowed_attach_size) return $this->setError('msg_exceeds_limit_size');
+				if($attached_size > $allowed_attach_size) throw new Rhymix\Framework\Exception('msg_exceeds_limit_size');
 			}
 		}
 
@@ -885,7 +921,7 @@ class fileController extends file
 		// Create a directory
 		if(!Rhymix\Framework\Storage::isDirectory($path) && !Rhymix\Framework\Storage::createDirectory($path))
 		{
-			return $this->setError('msg_not_permitted_create');
+			throw new Rhymix\Framework\Exception('msg_not_permitted_create');
 		}
 		
 		// Move the file
@@ -897,7 +933,7 @@ class fileController extends file
 				@copy($file_info['tmp_name'], $filename);
 				if(!file_exists($filename))
 				{
-					return $this->setError('msg_file_upload_error');
+					throw new Rhymix\Framework\Exception('msg_file_upload_error');
 				}
 			}
 		}
@@ -907,7 +943,7 @@ class fileController extends file
 			{
 				if (!Rhymix\Framework\Storage::move($file_info['tmp_name'], $filename))
 				{
-					return $this->setError('msg_file_upload_error');
+					throw new Rhymix\Framework\Exception('msg_file_upload_error');
 				}
 			}
 		}
@@ -917,7 +953,7 @@ class fileController extends file
 			{
 				if(!@move_uploaded_file($file_info['tmp_name'], $filename))
 				{
-					return $this->setError('msg_file_upload_error');
+					throw new Rhymix\Framework\Exception('msg_file_upload_error');
 				}
 			}
 		}
@@ -1173,16 +1209,16 @@ class fileController extends file
 		$vars = Context::getRequestVars();
 		$logged_info = Context::get('logged_info');
 
-		if(!$vars->editor_sequence) return $this->setError('msg_invalid_request');
+		if(!$vars->editor_sequence) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$upload_target_srl = $_SESSION['upload_info'][$vars->editor_sequence]->upload_target_srl;
 
 		$oFileModel = getModel('file');
 		$file_info = $oFileModel->getFile($vars->file_srl);
 
-		if(!$file_info) return $this->setError('msg_not_founded');
+		if(!$file_info) throw new Rhymix\Framework\Exceptions\TargetNotFound;
 
-		if(!$this->manager && !$file_info->member_srl === $logged_info->member_srl) return $this->setError('msg_not_permitted');
+		if(!$this->manager && !$file_info->member_srl === $logged_info->member_srl) throw new Rhymix\Framework\Exceptions\NotPermitted;
 
 		$args =  new stdClass();
 		$args->file_srl = $vars->file_srl;
diff --git a/modules/file/file.model.php b/modules/file/file.model.php
index ef667d052..c2cc861a3 100644
--- a/modules/file/file.model.php
+++ b/modules/file/file.model.php
@@ -45,7 +45,7 @@ class fileModel extends file
 				$oComment = $oCommentModel->getComment($upload_target_srl);
 				if($oComment->isExists() && !$oComment->isAccessible())
 				{
-					return $this->setError('msg_not_permitted');
+					throw new Rhymix\Framework\Exceptions\NotPermitted;
 				}
 
 				$oDocument = $oDocumentModel->getDocument($oComment->get('document_srl'));
@@ -54,7 +54,7 @@ class fileModel extends file
 			// document 권한 확인
 			if($oDocument->isExists() && !$oDocument->isAccessible())
 			{
-				return $this->setError('msg_not_permitted');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 
 			// 모듈 권한 확인
@@ -63,7 +63,7 @@ class fileModel extends file
 				$grant = $oModuleModel->getGrant($oModuleModel->getModuleInfoByModuleSrl($oDocument->get('module_srl')), $logged_info);
 				if(!$grant->access)
 				{
-					return $this->setError('msg_not_permitted');
+					throw new Rhymix\Framework\Exceptions\NotPermitted;
 				}
 			}
 
diff --git a/modules/importer/extract.class.php b/modules/importer/extract.class.php
index 0051e3c32..b179bba3d 100644
--- a/modules/importer/extract.class.php
+++ b/modules/importer/extract.class.php
@@ -124,7 +124,7 @@ class extract
 		// If local file
 		if(strncasecmp('http://', $this->filename, 7) !== 0)
 		{
-			if(!file_exists($this->filename)) return $this->setError('msg_no_xml_file');
+			if(!file_exists($this->filename)) return new BaseObject(-1, 'msg_no_xml_file');
 			$this->fd = fopen($this->filename,"r");
 			// If remote file
 		}
@@ -135,7 +135,7 @@ class extract
 			if(!$url_info['path']) $url_info['path'] = '/';
 
 			$this->fd = @fsockopen($url_info['host'], $url_info['port']);
-			if(!$this->fd) return $this->setError('msg_no_xml_file');
+			if(!$this->fd) return new BaseObject(-1, 'msg_no_xml_file');
 			// If the file name contains Korean, do urlencode(iconv required)
 			$path = $url_info['path'];
 			if(preg_match('/[\xEA-\xED][\x80-\xFF]{2}/', $path)&&function_exists('iconv'))
@@ -157,7 +157,7 @@ class extract
 				$buff .= $str = fgets($this->fd, 1024);
 				if(!trim($str)) break;
 			}
-			if(preg_match('/404 Not Found/i',$buff)) return $this->setError('msg_no_xml_file');
+			if(preg_match('/404 Not Found/i',$buff)) return new BaseObject(-1, 'msg_no_xml_file');
 		}
 
 		if($this->startTag)
diff --git a/modules/importer/importer.admin.controller.php b/modules/importer/importer.admin.controller.php
index 81e813367..112e50406 100644
--- a/modules/importer/importer.admin.controller.php
+++ b/modules/importer/importer.admin.controller.php
@@ -292,12 +292,12 @@ class importerAdminController extends importer
 		$this->unit_count = Context::get('unit_count');
 		// Check if an index file exists
 		$index_file = './files/cache/importer/'.$key.'/index';
-		if(!file_exists($index_file)) return $this->setError('msg_invalid_xml_file');
+		if(!file_exists($index_file)) throw new Rhymix\Framework\Exception('msg_invalid_xml_file');
 
 		switch($type)
 		{
 			case 'ttxml' :
-				if(!$target_module) return $this->setError('msg_invalid_request');
+				if(!$target_module) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 				$oModuleModel = getModel('module');
 				$columnList = array('module_srl', 'module');
@@ -317,7 +317,7 @@ class importerAdminController extends importer
 				break;
 			case 'module' :
 				// Check if the target module exists
-				if(!$target_module) return $this->setError('msg_invalid_request');
+				if(!$target_module) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 				$cur = $this->importModule($key, $cur, $index_file, $target_module);
 				break;
 		}
diff --git a/modules/install/install.admin.controller.php b/modules/install/install.admin.controller.php
index f409a31b2..524530a73 100644
--- a/modules/install/install.admin.controller.php
+++ b/modules/install/install.admin.controller.php
@@ -20,7 +20,7 @@ class installAdminController extends install
 	function procInstallAdminInstall()
 	{
 		$module_name = Context::get('module_name');
-		if(!$module_name) return $this->setError('invalid_request');
+		if(!$module_name) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oInstallController = getController('install');
 		$oInstallController->installModule($module_name, './modules/'.$module_name);
@@ -35,10 +35,10 @@ class installAdminController extends install
 	{
 		@set_time_limit(0);
 		$module_name = Context::get('module_name');
-		if(!$module_name) return $this->setError('invalid_request');
+		if(!$module_name) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oModule = getModule($module_name, 'class');
-		if(!$oModule) return $this->setError('invalid_request');
+		if(!$oModule) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		
 		$output = $oModule->moduleUpdate();
 		if($output instanceof BaseObject && !$output->toBool())
diff --git a/modules/install/install.controller.php b/modules/install/install.controller.php
index df2b26b16..c4a2b8980 100644
--- a/modules/install/install.controller.php
+++ b/modules/install/install.controller.php
@@ -17,7 +17,7 @@ class installController extends install
 		// Stop if already installed.
 		if (Context::isInstalled())
 		{
-			$this->stop('msg_already_installed');
+			throw new Rhymix\Framework\Exception('msg_already_installed');
 		}
 		
 		// Increase time limit.
@@ -76,7 +76,7 @@ class installController extends install
 		{
 			if ($oDB->isTableExists($table_name))
 			{
-				return $this->setError('msg_table_already_exists');
+				throw new Rhymix\Framework\Exception('msg_table_already_exists');
 			}
 		}
 		
@@ -99,7 +99,7 @@ class installController extends install
 		// Check if it is already installed
 		if (Context::isInstalled())
 		{
-			return $this->setError('msg_already_installed');
+			throw new Rhymix\Framework\Exception('msg_already_installed');
 		}
 		
 		// Get install parameters.
@@ -227,7 +227,7 @@ class installController extends install
 		catch(Exception $e)
 		{
 			$oDB->rollback();
-			return $this->setError($e->getMessage());
+			throw new Rhymix\Framework\Exception($e->getMessage());
 		}
 		
 		// Execute the install script.
@@ -411,7 +411,7 @@ class installController extends install
 		else
 		{
 			FileHandler::removeFile($this->flagLicenseAgreement);
-			return $this->setError('msg_must_accept_license_agreement');
+			throw new Rhymix\Framework\Exception('msg_must_accept_license_agreement');
 		}
 
 		if(!in_array(Context::getRequestMethod(),array('XMLRPC','JSON')))
diff --git a/modules/install/install.view.php b/modules/install/install.view.php
index a2696ae3a..f539ddcbb 100644
--- a/modules/install/install.view.php
+++ b/modules/install/install.view.php
@@ -19,7 +19,7 @@ class installView extends install
 		// Stop if already installed.
 		if (Context::isInstalled())
 		{
-			return $this->stop('msg_already_installed');
+			throw new Rhymix\Framework\Exception('msg_already_installed');
 		}
 		
 		// Set the browser title.
diff --git a/modules/integration_search/integration_search.view.php b/modules/integration_search/integration_search.view.php
index 7c9db39c3..45567e810 100644
--- a/modules/integration_search/integration_search.view.php
+++ b/modules/integration_search/integration_search.view.php
@@ -49,7 +49,10 @@ class integration_searchView extends integration_search
 		}
 		
 		// Check permissions
-		if(!$this->grant->access) return $this->setError('msg_not_permitted');
+		if(!$this->grant->access)
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
+		}
 
 		$config = $oModuleModel->getModuleConfig('integration_search');
 		if(!$config) $config = new stdClass;
diff --git a/modules/krzip/krzip.model.php b/modules/krzip/krzip.model.php
index 3edbd4cc1..9980f2bc3 100644
--- a/modules/krzip/krzip.model.php
+++ b/modules/krzip/krzip.model.php
@@ -104,7 +104,7 @@ class krzipModel extends krzip
 		$query = trim(strval($query));
 		if($query === '')
 		{
-			return $this->stop('msg_krzip_no_query');
+			return $this->setError('msg_krzip_no_query');
 		}
 
 		$output = $this->getEpostapiSearch($query);
diff --git a/modules/layout/layout.admin.controller.php b/modules/layout/layout.admin.controller.php
index a20943ffb..3e170a4ba 100644
--- a/modules/layout/layout.admin.controller.php
+++ b/modules/layout/layout.admin.controller.php
@@ -23,7 +23,7 @@ class layoutAdminController extends layout
 	 */
 	function procLayoutAdminInsert()
 	{
-		if(Context::get('layout') == 'faceoff') return $this->stop('not supported');
+		if(Context::get('layout') == 'faceoff') throw new Rhymix\Framework\Exception('not supported');
 
 		// Get information to create a layout
 		$site_module_info = Context::get('site_module_info');
@@ -130,7 +130,7 @@ class layoutAdminController extends layout
 					$output = executeQuery('menu.getMenuItemByUrl', $tmpArgs);
 					if(!$output->toBool())
 					{
-						return $this->setError('fail_to_update');
+						throw new Rhymix\Framework\Exception('fail_to_update');
 					}
 
 					$menu_srl = $output->data->menu_srl;
@@ -313,7 +313,7 @@ class layoutAdminController extends layout
 
 					if(!$output->toBool())
 					{
-						return $this->setError($output->message);
+						throw new Rhymix\Framework\Exception($output->message);
 					}
 				}
 			}
@@ -356,7 +356,7 @@ class layoutAdminController extends layout
 
 		if(!$layout_srl || !$code || !$is_post)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oLayoutModel = getModel('layout');
@@ -377,7 +377,7 @@ class layoutAdminController extends layout
 	function procLayoutAdminCodeReset()
 	{
 		$layout_srl = Context::get('layout_srl');
-		if(!$layout_srl) return $this->setError('msg_invalid_request');
+		if(!$layout_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		// delete user layout file
 		$oLayoutModel = getModel('layout');
@@ -480,13 +480,13 @@ class layoutAdminController extends layout
 		$oModuleModel = getModel('module');
 
 		$mid = Context::get('mid');
-		if(!$mid) return $this->setError('msg_invalid_request');
+		if(!$mid) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$site_module_info = Context::get('site_module_info');
 		$columnList = array('layout_srl');
 		$module_info = $oModuleModel->getModuleInfoByMid($mid, $site_module_info->site_srl, $columnList);
 		$layout_srl = $module_info->layout_srl;
-		if(!$layout_srl) return $this->setError('msg_invalid_request');
+		if(!$layout_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oLayoutModel = getModel('layout');
 
@@ -683,7 +683,7 @@ class layoutAdminController extends layout
 	 */
 	function procLayoutAdminUserLayoutImport()
 	{
-		return $this->stop('not supported');
+		throw new Rhymix\Framework\Exception('not supported');
 
 		// check upload
 		if(!Context::isUploaded()) exit();
@@ -713,12 +713,12 @@ class layoutAdminController extends layout
 		$sourceArgs = Context::getRequestVars();
 		if($sourceArgs->layout == 'faceoff')
 		{
-			return $this->stop('not supported');
+			throw new Rhymix\Framework\Exception('not supported');
 		}
 
 		if(!$sourceArgs->layout_srl)
 		{
-			return $this->stop('msg_empty_origin_layout');
+			throw new Rhymix\Framework\Exception('msg_empty_origin_layout');
 		}
 
 		$oLayoutModel = getModel('layout');
@@ -731,7 +731,7 @@ class layoutAdminController extends layout
 
 		if(!is_array($sourceArgs->title) || count($sourceArgs->title) == 0)
 		{
-			return $this->stop('msg_empty_target_layout');
+			throw new Rhymix\Framework\Exception('msg_empty_target_layout');
 		}
 
 		$output = $oLayoutModel->getLayoutRawData($sourceArgs->layout_srl, array('extra_vars'));
diff --git a/modules/layout/layout.admin.model.php b/modules/layout/layout.admin.model.php
index 7d6de7f67..004879a12 100644
--- a/modules/layout/layout.admin.model.php
+++ b/modules/layout/layout.admin.model.php
@@ -67,7 +67,7 @@ class layoutAdminModel extends layout
 		// Error appears if there is no layout information is registered
 		if(!$layout_info)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// Get a menu list
diff --git a/modules/layout/layout.admin.view.php b/modules/layout/layout.admin.view.php
index 42df0dcf1..9dc793a9b 100644
--- a/modules/layout/layout.admin.view.php
+++ b/modules/layout/layout.admin.view.php
@@ -140,11 +140,11 @@ class layoutAdminView extends layout
 		$layout = Context::get('layout');
 
 		if(!in_array($type, array('P', 'M'))) $type = 'P';
-		if(!$layout) return $this->stop('msg_invalid_request');
+		if(!$layout) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oLayoutModel = getModel('layout');
 		$layout_info = $oLayoutModel->getLayoutInfo($layout, null, $type);
-		if(!$layout_info) return $this->stop('msg_invalid_request');
+		if(!$layout_info) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		Context::set('layout_info', $layout_info);
 
@@ -175,10 +175,10 @@ class layoutAdminView extends layout
 
 		// Get layout info
 		$layout = Context::get('layout');
-		if($layout == 'faceoff') return $this->stop('not supported');
+		if($layout == 'faceoff') throw new Rhymix\Framework\Exception('not supported');
 
 		$layout_info = $oModel->getLayoutInfo($layout, null, $type);
-		if(!$layout_info) return $this->stop('msg_invalid_request');
+		if(!$layout_info) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		// get Menu list
 		$oMenuAdminModel = getAdminModel('menu');
@@ -295,11 +295,11 @@ class layoutAdminView extends layout
 		$layout_srl = Context::get('layout_srl');
 		$code = Context::get('code');
 		$code_css = Context::get('code_css');
-		if(!$layout_srl || !$code) return $this->setError('msg_invalid_request');
+		if(!$layout_srl || !$code) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// Get the layout information
 		$oLayoutModel = getModel('layout');
 		$layout_info = $oLayoutModel->getLayout($layout_srl);
-		if(!$layout_info) return $this->setError('msg_invalid_request');
+		if(!$layout_info) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// Separately handle the layout if its type is faceoff
 		if($layout_info && $layout_info->type == 'faceoff') $oLayoutModel->doActivateFaceOff($layout_info);
 		// Apply CSS directly
diff --git a/modules/layout/layout.view.php b/modules/layout/layout.view.php
index ec8730e93..3c2d714f2 100644
--- a/modules/layout/layout.view.php
+++ b/modules/layout/layout.view.php
@@ -55,7 +55,7 @@ class layoutView extends layout
 			$logged_info = Context::get('logged_info');
 			if($logged_info->is_admin != 'Y')
 			{
-				throw new Exception(lang('msg_invalid_request'));
+				throw new Rhymix\Framework\Exceptions\InvalidRequest;
 			}
 
 			// if module is 'ARTiCLE' and from site design setting, make content directly
@@ -253,13 +253,13 @@ class layoutView extends layout
 			$output = executeQuery('layout.getOneModuleInstanceByModuleName', $args);
 			if(!$output->toBool())
 			{
-				throw new Exception($output->getMessage());
+				throw new Rhymix\Framework\Exception($output->getMessage());
 			}
 
 			// if there is no module instance, error...
 			if(!$output->data)
 			{
-				throw new Exception(lang('msg_unabled_preview'));
+				throw new Rhymix\Framework\Exception(lang('msg_unabled_preview'));
 			}
 		
 			$mid = current($output->data)->mid;
@@ -301,7 +301,7 @@ class layoutView extends layout
 		$oModule = $oModuleHandler->procModule();
 		if(!$oModule->toBool())
 		{
-			throw new Exception(lang('not_support_layout_preview'));
+			throw new Rhymix\Framework\Exception(lang('not_support_layout_preview'));
 		}
 
 		// get module html
@@ -318,23 +318,23 @@ class layoutView extends layout
 	{
 		if(!checkCSRF())
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// admin check
 		// this act is admin view but in normal view because do not load admin css/js files
 		$logged_info = Context::get('logged_info');
-		if($logged_info->is_admin != 'Y') return $this->stop('msg_invalid_request');
+		if($logged_info->is_admin != 'Y') throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$layout_srl = Context::get('layout_srl');
 		$code = Context::get('code');
 
 		$code_css = Context::get('code_css');
-		if(!$layout_srl || !$code) return $this->setError('msg_invalid_request');
+		if(!$layout_srl || !$code) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// Get the layout information
 		$oLayoutModel = getModel('layout');
 		$layout_info = $oLayoutModel->getLayout($layout_srl);
-		if(!$layout_info) return $this->setError('msg_invalid_request');
+		if(!$layout_info) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// Separately handle the layout if its type is faceoff
 		if($layout_info && $layout_info->type == 'faceoff') $oLayoutModel->doActivateFaceOff($layout_info);
 		// Apply CSS directly
diff --git a/modules/member/member.admin.controller.php b/modules/member/member.admin.controller.php
index 0d08a6ca1..c3e06f488 100644
--- a/modules/member/member.admin.controller.php
+++ b/modules/member/member.admin.controller.php
@@ -26,7 +26,7 @@ class memberAdminController extends member
 		$logged_info = Context::get('logged_info');
 		if($logged_info->is_admin != 'Y' || !checkCSRF())
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$args = Context::gets('member_srl','email_address','find_account_answer', 'allow_mailing','allow_message','denied','is_admin','description','group_srl_list','limit_date');
@@ -741,7 +741,7 @@ class memberAdminController extends member
 		// Check ID duplicated
 		if (Context::isReservedWord($args->column_name))
 		{
-			return $this->setError('msg_column_id_not_available');
+			throw new Rhymix\Framework\Exception('msg_column_id_not_available');
 		}
 		$oMemberModel = getModel('member');
 		$config = $oMemberModel->getMemberConfig();
@@ -750,7 +750,7 @@ class memberAdminController extends member
 			if($item->name == $args->column_name)
 			{
 				if($args->member_join_form_srl && $args->member_join_form_srl == $item->member_join_form_srl) continue;
-				return $this->setError('msg_column_id_not_available');
+				throw new Rhymix\Framework\Exception('msg_column_id_not_available');
 			}
 		}
 		// Fix if member_join_form_srl exists. Add if not exists.
@@ -961,7 +961,7 @@ class memberAdminController extends member
 	function procMemberAdminDeleteMembers()
 	{
 		$target_member_srls = Context::get('target_member_srls');
-		if(!$target_member_srls) return $this->setError('msg_invalid_request');
+		if(!$target_member_srls) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		$member_srls = explode(',', $target_member_srls);
 		$oMemberController = getController('member');
 
@@ -985,7 +985,7 @@ class memberAdminController extends member
 	function procMemberAdminUpdateMembersGroup()
 	{
 		$member_srl = Context::get('member_srl');
-		if(!$member_srl) return $this->setError('msg_invalid_request');
+		if(!$member_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		$member_srls = explode(',',$member_srl);
 
 		$group_srl = Context::get('group_srls');
@@ -1258,7 +1258,7 @@ class memberAdminController extends member
 	function updateGroup($args)
 	{
 		if(!$args->site_srl) $args->site_srl = 0;
-		if(!$args->group_srl) return $this->setError('lang->msg_not_founded');
+		if(!$args->group_srl) throw new Rhymix\Framework\Exceptions\TargetNotFound;
 		
 		// Call trigger (before)
 		$trigger_output = ModuleHandler::triggerCall('member.updateGroup', 'before', $args);
@@ -1302,8 +1302,8 @@ class memberAdminController extends member
 		$columnList = array('group_srl', 'is_default');
 		$group_info = $oMemberModel->getGroup($group_srl, $columnList);
 
-		if(!$group_info) return $this->setError('lang->msg_not_founded');
-		if($group_info->is_default == 'Y') return $this->setError('msg_not_delete_default');
+		if(!$group_info) throw new Rhymix\Framework\Exceptions\TargetNotFound;
+		if($group_info->is_default == 'Y') throw new Rhymix\Framework\Exception('msg_not_delete_default');
 		
 		// Call trigger (before)
 		$trigger_output = ModuleHandler::triggerCall('member.deleteGroup', 'before', $group_info);
diff --git a/modules/member/member.controller.php b/modules/member/member.controller.php
index aef2d38d5..6007a54e7 100644
--- a/modules/member/member.controller.php
+++ b/modules/member/member.controller.php
@@ -30,7 +30,7 @@ class memberController extends member
 		if(!$user_id && !$password && Context::getRequestMethod() == 'GET')
 		{
 			$this->setRedirectUrl(getNotEncodedUrl(''));
-			return $this->setError('null_user_id');
+			throw new Rhymix\Framework\Exception('null_user_id');
 		}
 
 		// Variables
@@ -42,8 +42,8 @@ class memberController extends member
 
 		if(!$keep_signed) $keep_signed = Context::get('keep_signed');
 		// Return an error when id and password doesn't exist
-		if(!$user_id) return $this->setError('null_user_id');
-		if(!$password) return $this->setError('null_password');
+		if(!$user_id) throw new Rhymix\Framework\Exception('null_user_id');
+		if(!$password) throw new Rhymix\Framework\Exception('null_password');
 
 		$output = $this->doLogin($user_id, $password, $keep_signed=='Y'?true:false);
 		if (!$output->toBool()) return $output;
@@ -122,7 +122,7 @@ class memberController extends member
 		$document_srl = (int) (Context::get('document_srl') ?: Context::get('target_srl'));
 		if(!$document_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		$oDocumentModel = getModel('document');
@@ -131,7 +131,7 @@ class memberController extends member
 		// Check document
 		if(!$oDocument->isAccessible())
 		{
-			return $this->setError('msg_is_secret');
+			throw new Rhymix\Framework\Exception('msg_is_secret');
 		}
 		
 		$oModuleModel = getModel('module');
@@ -143,19 +143,19 @@ class memberController extends member
 		// Check access to module of the document
 		if(!$grant->access)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		
 		// Check grant to module of the document
 		if(isset($grant->list) && isset($grant->view) && (!$grant->list || !$grant->view))
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		
 		// Check consultation option
 		if(isset($grant->consultation_read) && $module_info->consultation == 'Y' && !$grant->consultation_read && !$oDocument->isGranted())
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		
 		// Find default scrap folder
@@ -187,7 +187,7 @@ class memberController extends member
 		$output = executeQuery('member.getScrapDocument', $args);
 		if($output->data->count)
 		{
-			return $this->setError('msg_alreay_scrapped');
+			throw new Rhymix\Framework\Exception('msg_alreay_scrapped');
 		}
 		
 		// Insert
@@ -206,11 +206,12 @@ class memberController extends member
 	function procMemberDeleteScrap()
 	{
 		// Check login information
-		if(!Context::get('is_logged')) return $this->setError('msg_not_logged');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\MustLogin;
 		$logged_info = Context::get('logged_info');
 
 		$document_srl = (int)Context::get('document_srl');
-		if(!$document_srl) return $this->setError('msg_invalid_request');
+		if(!$document_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
+
 		// Variables
 		$args = new stdClass;
 		$args->member_srl = $logged_info->member_srl;
@@ -226,14 +227,14 @@ class memberController extends member
 	function procMemberMoveScrapFolder()
 	{
 		// Check login information
-		if(!Context::get('is_logged')) return $this->setError('msg_not_logged');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\MustLogin;
 		$logged_info = Context::get('logged_info');
 
 		$document_srl = (int)Context::get('document_srl');
 		$folder_srl = (int)Context::get('folder_srl');
 		if(!$document_srl || !$folder_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// Check that the target folder exists and belongs to member
@@ -243,7 +244,7 @@ class memberController extends member
 		$output = executeQueryArray('member.getScrapFolderList', $args);
 		if(!count($output->data))
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// Move
@@ -262,7 +263,7 @@ class memberController extends member
 	function procMemberInsertScrapFolder()
 	{
 		// Check login information
-		if(!Context::get('is_logged')) return $this->setError('msg_not_logged');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\MustLogin;
 		$logged_info = Context::get('logged_info');
 		
 		// Get new folder name
@@ -270,7 +271,7 @@ class memberController extends member
 		$folder_name = escape(trim(utf8_normalize_spaces($folder_name)));
 		if(!$folder_name)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// Check existing folder with same name
@@ -280,7 +281,7 @@ class memberController extends member
 		$output = executeQueryArray('member.getScrapFolderList', $args);
 		if(count($output->data) || $folder_name === lang('default_folder'))
 		{
-			return $this->setError('msg_folder_alreay_exists');
+			throw new Rhymix\Framework\Exception('msg_folder_alreay_exists');
 		}
 		
 		// Create folder
@@ -301,7 +302,7 @@ class memberController extends member
 	function procMemberRenameScrapFolder()
 	{
 		// Check login information
-		if(!Context::get('is_logged')) return $this->setError('msg_not_logged');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\MustLogin;
 		$logged_info = Context::get('logged_info');
 		
 		// Get new folder name
@@ -310,7 +311,7 @@ class memberController extends member
 		$folder_name = escape(trim(utf8_normalize_spaces($folder_name)));
 		if(!$folder_srl || !$folder_name)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// Check that the original folder exists and belongs to member
@@ -320,11 +321,11 @@ class memberController extends member
 		$output = executeQueryArray('member.getScrapFolderList', $args);
 		if(!count($output->data))
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		if(array_first($output->data)->name === '/DEFAULT/')
 		{
-			return $this->setError('msg_folder_is_default');
+			throw new Rhymix\Framework\Exception('msg_folder_is_default');
 		}
 		
 		// Check existing folder with same name
@@ -335,7 +336,7 @@ class memberController extends member
 		$output = executeQueryArray('member.getScrapFolderList', $args);
 		if(count($output->data) || $folder_name === lang('default_folder'))
 		{
-			return $this->setError('msg_folder_alreay_exists');
+			throw new Rhymix\Framework\Exception('msg_folder_alreay_exists');
 		}
 		
 		// Rename folder
@@ -353,14 +354,14 @@ class memberController extends member
 	function procMemberDeleteScrapFolder()
 	{
 		// Check login information
-		if(!Context::get('is_logged')) return $this->setError('msg_not_logged');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\MustLogin;
 		$logged_info = Context::get('logged_info');
 		
 		// Get folder_srl to delete
 		$folder_srl = intval(Context::get('folder_srl'));
 		if(!$folder_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		// Check that the folder exists and belongs to member
@@ -370,11 +371,11 @@ class memberController extends member
 		$output = executeQueryArray('member.getScrapFolderList', $args);
 		if(!count($output->data))
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		if(array_first($output->data)->name === '/DEFAULT/')
 		{
-			return $this->setError('msg_folder_is_default');
+			throw new Rhymix\Framework\Exception('msg_folder_is_default');
 		}
 		
 		// Check that the folder is empty
@@ -384,7 +385,7 @@ class memberController extends member
 		$output = executeQueryArray('member.getScrapDocumentList', $args);
 		if(count($output->data))
 		{
-			return $this->setError('msg_folder_not_empty');
+			throw new Rhymix\Framework\Exception('msg_folder_not_empty');
 		}
 		
 		// Delete folder
@@ -436,22 +437,22 @@ class memberController extends member
 	function procMemberDeleteSavedDocument()
 	{
 		// Check login information
-		if(!Context::get('is_logged')) return $this->setError('msg_not_logged');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\MustLogin;
 		$logged_info = Context::get('logged_info');
 
 		$document_srl = (int)Context::get('document_srl');
-		if(!$document_srl) return $this->setError('msg_invalid_request');
+		if(!$document_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		
 		$oDocumentModel = getModel('document');
 		$oDocument = $oDocumentModel->getDocument($document_srl);
 		if ($oDocument->get('member_srl') != $logged_info->member_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		$configStatusList = $oDocumentModel->getStatusList();
 		if ($oDocument->get('status') != $configStatusList['temp'])
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// Variables
@@ -465,14 +466,14 @@ class memberController extends member
 	function procMemberDeleteAutologin()
 	{
 		// Check login information
-		if(!Context::get('is_logged')) return $this->setError('msg_not_logged');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\MustLogin;
 		$logged_info = Context::get('logged_info');
 		
 		$autologin_id = intval(Context::get('autologin_id'));
 		$autologin_key = Context::get('autologin_key');
 		if (!$autologin_id || !$autologin_key)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		$args = new stdClass;
@@ -575,7 +576,11 @@ class memberController extends member
 	 */
 	function procMemberInsert()
 	{
-		if (Context::getRequestMethod () == "GET") return new BaseObject (-1, "msg_invalid_request");
+		if (Context::getRequestMethod() == 'GET')
+		{
+			throw new Rhymix\Framework\Exceptions\SecurityViolation;
+		}
+		
 		$oMemberModel = &getModel ('member');
 		$config = $oMemberModel->getMemberConfig();
 
@@ -583,7 +588,7 @@ class memberController extends member
 		$trigger_output = ModuleHandler::triggerCall ('member.procMemberInsert', 'before', $config);
 		if(!$trigger_output->toBool ()) return $trigger_output;
 		// Check if an administrator allows a membership
-		if($config->enable_join != 'Y') return $this->stop ('msg_signup_disabled');
+		if($config->enable_join != 'Y') throw new Rhymix\Framework\Exceptions\FeatureDisabled('msg_signup_disabled');
 
 		// Check if the user accept the license terms (only if terms exist)
 		$accept_agreement = Context::get('accept_agreement');
@@ -591,7 +596,7 @@ class memberController extends member
 		{
 			if($agreement->type === 'required' && $accept_agreement !== 'Y' && $accept_agreement[$i] !== 'Y')
 			{
-				return $this->setError('msg_accept_agreement');
+				throw new Rhymix\Framework\Exception('msg_accept_agreement');
 			}
 		}
 
@@ -646,7 +651,7 @@ class memberController extends member
 		if(!$oMemberModel->checkPasswordStrength($args->password, $config->password_strength))
 		{
 			$message = lang('about_password_strength');
-			return $this->setError($message[$config->password_strength]);
+			throw new Rhymix\Framework\Exception($message[$config->password_strength]);
 		}
 
 		// Remove some unnecessary variables from all the vars
@@ -779,19 +784,19 @@ class memberController extends member
 	{
 		if($_SESSION['rechecked_password_step'] != 'INPUT_PASSWORD')
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		if(!Context::get('is_logged'))
 		{
-			return $this->stop('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$password = Context::get('password');
 
 		if(!$password)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oMemberModel = getModel('member');
@@ -805,7 +810,7 @@ class memberController extends member
 		// Verify the current password
 		if(!$oMemberModel->isValidPassword($member_info->password, $password))
 		{
-			return $this->setError('invalid_password');
+			throw new Rhymix\Framework\Exception('invalid_password');
 		}
 
 		$_SESSION['rechecked_password_step'] = 'VALIDATE_PASSWORD';
@@ -830,12 +835,12 @@ class memberController extends member
 	{
 		if(!Context::get('is_logged'))
 		{
-			return $this->stop('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		if($_SESSION['rechecked_password_step'] != 'INPUT_DATA')
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		unset($_SESSION['rechecked_password_step']);
 
@@ -969,7 +974,7 @@ class memberController extends member
 	 */
 	function procMemberModifyPassword()
 	{
-		if(!Context::get('is_logged')) return $this->stop('msg_not_logged');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\MustLogin;
 		// Extract the necessary information in advance
 		$current_password = trim(Context::get('current_password'));
 		$password = trim(Context::get('password1'));
@@ -983,10 +988,10 @@ class memberController extends member
 
 		$member_info = $oMemberModel->getMemberInfoByMemberSrl($member_srl, 0, $columnList);
 		// Verify the cuttent password
-		if(!$oMemberModel->isValidPassword($member_info->password, $current_password, $member_srl)) return $this->setError('invalid_password');
+		if(!$oMemberModel->isValidPassword($member_info->password, $current_password, $member_srl)) throw new Rhymix\Framework\Exception('invalid_password');
 
 		// Check if a new password is as same as the previous password
-		if($current_password == $password) return $this->setError('invalid_new_password');
+		if($current_password == $password) throw new Rhymix\Framework\Exception('invalid_new_password');
 
 		// Execute insert or update depending on the value of member_srl
 		$args = new stdClass;
@@ -1017,7 +1022,7 @@ class memberController extends member
 	 */
 	function procMemberLeave()
 	{
-		if(!Context::get('is_logged')) return $this->stop('msg_not_logged');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\MustLogin;
 		// Extract the necessary information in advance
 		$password = trim(Context::get('password'));
 		// Get information of logged-in user
@@ -1029,7 +1034,7 @@ class memberController extends member
 		$columnList = array('member_srl', 'password');
 		$member_info = $oMemberModel->getMemberInfoByMemberSrl($member_srl, 0, $columnList);
 		// Verify the cuttent password
-		if(!$oMemberModel->isValidPassword($member_info->password, $password)) return $this->setError('invalid_password');
+		if(!$oMemberModel->isValidPassword($member_info->password, $password)) throw new Rhymix\Framework\Exception('invalid_password');
 
 		$output = $this->deleteMember($member_srl);
 		if(!$output->toBool()) return $output;
@@ -1052,17 +1057,17 @@ class memberController extends member
 	{
 		// Check if the file is successfully uploaded
 		$file = $_FILES['profile_image'];
-		if(!is_uploaded_file($file['tmp_name'])) return $this->stop('msg_not_uploaded_profile_image');
+		if(!is_uploaded_file($file['tmp_name'])) throw new Rhymix\Framework\Exception('msg_not_uploaded_profile_image');
 		// Ignore if member_srl is invalid or doesn't exist.
 		$member_srl = Context::get('member_srl');
-		if(!$member_srl) return $this->stop('msg_not_uploaded_profile_image');
+		if(!$member_srl) throw new Rhymix\Framework\Exception('msg_not_uploaded_profile_image');
 
 		$logged_info = Context::get('logged_info');
-		if($logged_info->is_admin != 'Y' && $logged_info->member_srl != $member_srl) return $this->stop('msg_not_uploaded_profile_image');
+		if($logged_info->is_admin != 'Y' && $logged_info->member_srl != $member_srl) throw new Rhymix\Framework\Exception('msg_not_uploaded_profile_image');
 		// Return if member module is set not to use an image name or the user is not an administrator ;
 		$oMemberModel = getModel('member');
 		$config = $oMemberModel->getMemberConfig();
-		if($logged_info->is_admin != 'Y' && $config->profile_image != 'Y') return $this->stop('msg_not_uploaded_profile_image');
+		if($logged_info->is_admin != 'Y' && $config->profile_image != 'Y') throw new Rhymix\Framework\Exception('msg_not_uploaded_profile_image');
 
 		$output = $this->insertProfileImage($member_srl, $file['tmp_name']);
 		if(!$output->toBool()) return $output;
@@ -1099,7 +1104,7 @@ class memberController extends member
 		elseif(IMAGETYPE_GIF == $type) $ext = 'gif';
 		else
 		{
-			return $this->stop('msg_not_uploaded_profile_image');
+			throw new Rhymix\Framework\Exception('msg_not_uploaded_profile_image');
 		}
 
 		$target_path = sprintf('files/member_extra_info/profile_image/%s', getNumberingPath($member_srl));
@@ -1118,7 +1123,7 @@ class memberController extends member
 			if($max_filesize && $filesize > ($max_filesize * 1024))
 			{
 				FileHandler::removeFile($temp_filename);
-				return $this->stop(implode(' ' , array(
+				throw new Rhymix\Framework\Exception(implode(' ' , array(
 					Context::getLang('msg_not_uploaded_profile_image'),
 					Context::getLang('msg_exceeds_limit_size')
 				)));
@@ -1134,7 +1139,7 @@ class memberController extends member
 			$filesize = filesize($target_file);
 			if($max_filesize && $filesize > ($max_filesize * 1024))
 			{
-				return $this->stop(implode(' ' , array(
+				throw new Rhymix\Framework\Exception(implode(' ' , array(
 					Context::getLang('msg_not_uploaded_profile_image'),
 					Context::getLang('msg_exceeds_limit_size')
 				)));
@@ -1157,17 +1162,17 @@ class memberController extends member
 	{
 		// Check if the file is successfully uploaded
 		$file = $_FILES['image_name'];
-		if(!is_uploaded_file($file['tmp_name'])) return $this->stop('msg_not_uploaded_image_name');
+		if(!is_uploaded_file($file['tmp_name'])) throw new Rhymix\Framework\Exception('msg_not_uploaded_image_name');
 		// Ignore if member_srl is invalid or doesn't exist.
 		$member_srl = Context::get('member_srl');
-		if(!$member_srl) return $this->stop('msg_not_uploaded_image_name');
+		if(!$member_srl) throw new Rhymix\Framework\Exception('msg_not_uploaded_image_name');
 
 		$logged_info = Context::get('logged_info');
-		if($logged_info->is_admin != 'Y' && $logged_info->member_srl != $member_srl) return $this->stop('msg_not_uploaded_image_name');
+		if($logged_info->is_admin != 'Y' && $logged_info->member_srl != $member_srl) throw new Rhymix\Framework\Exception('msg_not_uploaded_image_name');
 		// Return if member module is set not to use an image name or the user is not an administrator ;
 		$oMemberModel = getModel('member');
 		$config = $oMemberModel->getMemberConfig();
-		if($logged_info->is_admin != 'Y' && $config->image_name != 'Y') return $this->stop('msg_not_uploaded_image_name');
+		if($logged_info->is_admin != 'Y' && $config->image_name != 'Y') throw new Rhymix\Framework\Exception('msg_not_uploaded_image_name');
 
 		$output = $this->insertImageName($member_srl, $file['tmp_name']);
 		if(!$output->toBool()) return $output;
@@ -1218,7 +1223,7 @@ class memberController extends member
 			if($max_filesize && $filesize > ($max_filesize * 1024))
 			{
 				FileHandler::removeFile($temp_filename);
-				return $this->stop(implode(' ' , array(
+				throw new Rhymix\Framework\Exception(implode(' ' , array(
 					Context::getLang('msg_not_uploaded_image_name'),
 					Context::getLang('msg_exceeds_limit_size')
 				)));
@@ -1234,7 +1239,7 @@ class memberController extends member
 			$filesize = filesize($target_file);
 			if($max_filesize && $filesize > ($max_filesize * 1024))
 			{
-				return $this->stop(implode(' ' , array(
+				throw new Rhymix\Framework\Exception(implode(' ' , array(
 					Context::getLang('msg_not_uploaded_image_name'),
 					Context::getLang('msg_exceeds_limit_size')
 				)));
@@ -1308,17 +1313,17 @@ class memberController extends member
 	{
 		// Check if the file is successfully uploaded
 		$file = $_FILES['image_mark'];
-		if(!is_uploaded_file($file['tmp_name'])) return $this->stop('msg_not_uploaded_image_mark');
+		if(!is_uploaded_file($file['tmp_name'])) throw new Rhymix\Framework\Exception('msg_not_uploaded_image_mark');
 		// Ignore if member_srl is invalid or doesn't exist.
 		$member_srl = Context::get('member_srl');
-		if(!$member_srl) return $this->stop('msg_not_uploaded_image_mark');
+		if(!$member_srl) throw new Rhymix\Framework\Exception('msg_not_uploaded_image_mark');
 
 		$logged_info = Context::get('logged_info');
-		if($logged_info->is_admin != 'Y' && $logged_info->member_srl != $member_srl) return $this->stop('msg_not_uploaded_image_mark');
+		if($logged_info->is_admin != 'Y' && $logged_info->member_srl != $member_srl) throw new Rhymix\Framework\Exception('msg_not_uploaded_image_mark');
 		// Membership in the images mark the module using the ban was set by an administrator or return;
 		$oMemberModel = getModel('member');
 		$config = $oMemberModel->getMemberConfig();
-		if($logged_info->is_admin != 'Y' && $config->image_mark != 'Y') return $this->stop('msg_not_uploaded_image_mark');
+		if($logged_info->is_admin != 'Y' && $config->image_mark != 'Y') throw new Rhymix\Framework\Exception('msg_not_uploaded_image_mark');
 
 		$this->insertImageMark($member_srl, $file['tmp_name']);
 		if(!$output->toBool()) return $output;
@@ -1365,7 +1370,7 @@ class memberController extends member
 			if($max_filesize && $filesize > ($max_filesize * 1024))
 			{
 				FileHandler::removeFile($temp_filename);
-				return $this->stop(implode(' ' , array(
+				throw new Rhymix\Framework\Exception(implode(' ' , array(
 					Context::getLang('msg_not_uploaded_group_image_mark'),
 					Context::getLang('msg_exceeds_limit_size')
 				)));
@@ -1381,7 +1386,7 @@ class memberController extends member
 			if($max_filesize && $filesize > ($max_filesize * 1024))
 			{
 				FileHandler::removeFile($target_file);
-				return $this->stop(implode(' ' , array(
+				throw new Rhymix\Framework\Exception(implode(' ' , array(
 					Context::getLang('msg_not_uploaded_group_image_mark'),
 					Context::getLang('msg_exceeds_limit_size')
 				)));
@@ -1428,14 +1433,14 @@ class memberController extends member
 	function procMemberFindAccount()
 	{
 		$email_address = Context::get('email_address');
-		if(!$email_address) return $this->setError('msg_invalid_request');
+		if(!$email_address) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oMemberModel = getModel('member');
 		$oModuleModel = getModel('module');
 
 		// Check if a member having the same email address exists
 		$member_srl = $oMemberModel->getMemberSrlByEmailAddress($email_address);
-		if(!$member_srl) return $this->setError('msg_email_not_exists');
+		if(!$member_srl) throw new Rhymix\Framework\Exception('msg_email_not_exists');
 
 		// Get information of the member
 		$columnList = array('denied', 'member_srl', 'user_id', 'user_name', 'email_address', 'nick_name');
@@ -1447,7 +1452,7 @@ class memberController extends member
 			$chk_args = new stdClass;
 			$chk_args->member_srl = $member_info->member_srl;
 			$output = executeQuery('member.chkAuthMail', $chk_args);
-			if($output->toBool() && $output->data->count != '0') return $this->setError('msg_user_not_confirmed');
+			if($output->toBool() && $output->data->count != '0') throw new Rhymix\Framework\Exception('msg_user_not_confirmed');
 		}
 
 		// Insert data into the authentication DB
@@ -1528,7 +1533,7 @@ class memberController extends member
 	 */
 	function procMemberFindAccountByQuestion()
 	{
-		return $this->setError('msg_question_not_allowed');
+		throw new Rhymix\Framework\Exception('msg_question_not_allowed');
 	}
 
 	/**
@@ -1547,7 +1552,7 @@ class memberController extends member
 
 		if(!$member_srl || !$auth_key)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// Call a trigger (before)
@@ -1557,7 +1562,7 @@ class memberController extends member
 		$trigger_output = ModuleHandler::triggerCall('member.procMemberAuthAccount', 'before', $trigger_obj);
 		if(!$trigger_output->toBool())
 		{
-			return $this->stop($trigger_output->getMessage());
+			return $trigger_output;
 		}
 
 		// Test logs for finding password by user_id and authkey
@@ -1569,13 +1574,13 @@ class memberController extends member
 		if(!$output->toBool() || $output->data->auth_key !== $auth_key)
 		{
 			executeQuery('member.deleteAuthMail', $args);
-			return $this->stop('msg_invalid_auth_key');
+			throw new Rhymix\Framework\Exception('msg_invalid_auth_key');
 		}
 
 		if(ztime($output->data->regdate) < time() - (86400 * 3))
 		{
 			executeQuery('member.deleteAuthMail', $args);
-			return $this->stop('msg_expired_auth_key');
+			throw new Rhymix\Framework\Exception('msg_expired_auth_key');
 		}
 
 		// Back up the value of $output->data->is_register
@@ -1594,7 +1599,7 @@ class memberController extends member
 		$output = executeQuery('member.updateMemberPassword', $args);
 		if(!$output->toBool())
 		{
-			return $this->stop($output->getMessage());
+			return $output;
 		}
 
 		// Remove all values having the member_srl from authentication table
@@ -1621,14 +1626,14 @@ class memberController extends member
 	{
 		// Get an email_address
 		$email_address = Context::get('email_address');
-		if(!$email_address) return $this->setError('msg_invalid_request');
+		if(!$email_address) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// Log test by using email_address
 		$oMemberModel = getModel('member');
 
 		$args = new stdClass;
 		$args->email_address = $email_address;
 		$memberSrl = $oMemberModel->getMemberSrlByEmailAddress($email_address);
-		if(!$memberSrl) return $this->setError('msg_not_exists_member');
+		if(!$memberSrl) throw new Rhymix\Framework\Exception('msg_not_exists_member');
 
 		$columnList = array('member_srl', 'user_id', 'user_name', 'nick_name', 'email_address');
 		$member_info = $oMemberModel->getMemberInfoByMemberSrl($memberSrl, 0, $columnList);
@@ -1642,12 +1647,12 @@ class memberController extends member
 		$chk_args = new stdClass;
 		$chk_args->member_srl = $member_info->member_srl;
 		$output = executeQuery('member.chkAuthMail', $chk_args);
-		if($output->toBool() && $output->data->count == '0') return $this->setError('msg_invalid_request');
+		if($output->toBool() && $output->data->count == '0') throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$auth_args = new stdClass;
 		$auth_args->member_srl = $member_info->member_srl;
 		$output = executeQueryArray('member.getAuthMailInfo', $auth_args);
-		if(!$output->data || !$output->data[0]->auth_key)  return $this->setError('msg_invalid_request');
+		if(!$output->data || !$output->data[0]->auth_key) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		$auth_info = $output->data[0];
 
 		// Update the regdate of authmail entry
@@ -1711,21 +1716,21 @@ class memberController extends member
 
 		if(!$memberInfo)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$newEmail = Context::get('email_address');
 
 		if(!$newEmail)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oMemberModel = getModel('member');
 		$member_srl = $oMemberModel->getMemberSrlByEmailAddress($newEmail);
 		if($member_srl)
 		{
-			return $this->setError('msg_exists_email_address');
+			throw new Rhymix\Framework\Exception('msg_exists_email_address');
 		}
 
 		// remove all key by member_srl
@@ -1745,7 +1750,7 @@ class memberController extends member
 		$output = executeQuery('member.updateMemberEmailAddress', $args);
 		if(!$output->toBool())
 		{
-			return $this->stop($output->getMessage());
+			return $output;
 		}
 
 		$this->_clearMemberCache($args->member_srl);
@@ -1840,7 +1845,7 @@ class memberController extends member
 	{
 		$site_module_info = Context::get('site_module_info');
 		$logged_info = Context::get('logged_info');
-		if(!$site_module_info->site_srl || !Context::get('is_logged') || count($logged_info->group_srl_list) ) return $this->setError('msg_invalid_request');
+		if(!$site_module_info->site_srl || !Context::get('is_logged') || count($logged_info->group_srl_list) ) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oMemberModel = getModel('member');
 		$columnList = array('site_srl', 'group_srl', 'title');
@@ -1859,7 +1864,7 @@ class memberController extends member
 	{
 		$site_module_info = Context::get('site_module_info');
 		$logged_info = Context::get('logged_info');
-		if(!$site_module_info->site_srl || !Context::get('is_logged') || count($logged_info->group_srl_list) ) return $this->setError('msg_invalid_request');
+		if(!$site_module_info->site_srl || !Context::get('is_logged') || count($logged_info->group_srl_list) ) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$args = new stdClass;
 		$args->site_srl= $site_module_info->site_srl;
@@ -2624,7 +2629,7 @@ class memberController extends member
 				unset($args->denied);
 			if($logged_info->member_srl != $args->member_srl && $is_admin == false)
 			{
-				return $this->stop('msg_invalid_request');
+				return new BaseObject(-1, 'msg_invalid_request');
 			}
 		}
 
@@ -3041,12 +3046,12 @@ class memberController extends member
 
 	function procMemberModifyEmailAddress()
 	{
-		if(!Context::get('is_logged')) return $this->setError('msg_not_logged');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\MustLogin;
 
 		$member_info = Context::get('logged_info');
 		$newEmail = Context::get('email_address');
 
-		if(!$newEmail) return $this->setError('msg_invalid_request');
+		if(!$newEmail) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oMemberModel = getModel('member');
 		// Check managed Email Host
@@ -3062,16 +3067,16 @@ class memberController extends member
 				$hosts[] = $host->email_host;
 			}
 			$message = sprintf($managed_email_host[$emailhost_check],implode(', ',$hosts),'id@'.implode(', id@',$hosts));
-			return $this->setError($message);
+			throw new Rhymix\Framework\Exception($message);
 		}
 
 		// Check if the e-mail address is already registered
 		$member_srl = $oMemberModel->getMemberSrlByEmailAddress($newEmail);
-		if($member_srl) return $this->setError('msg_exists_email_address');
+		if($member_srl) throw new Rhymix\Framework\Exception('msg_exists_email_address');
 
 		if($_SESSION['rechecked_password_step'] != 'INPUT_DATA')
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		unset($_SESSION['rechecked_password_step']);
 
@@ -3129,7 +3134,7 @@ class memberController extends member
 	{
 		$member_srl = Context::get('member_srl');
 		$auth_key = Context::get('auth_key');
-		if(!$member_srl || !$auth_key) return $this->stop('msg_invalid_request');
+		if(!$member_srl || !$auth_key) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		// Test logs for finding password by user_id and authkey
 		$args = new stdClass;
@@ -3139,7 +3144,7 @@ class memberController extends member
 		if(!$output->toBool() || $output->data->auth_key != $auth_key)
 		{
 			if(strlen($output->data->auth_key) !== strlen($auth_key)) executeQuery('member.deleteAuthChangeEmailAddress', $args);
-			return $this->stop('msg_invalid_modify_email_auth_key');
+			throw new Rhymix\Framework\Exception('msg_invalid_modify_email_auth_key');
 		}
 
 		$newEmail = $output->data->user_id;
@@ -3147,7 +3152,7 @@ class memberController extends member
 		list($args->email_id, $args->email_host) = explode('@', $newEmail);
 
 		$output = executeQuery('member.updateMemberEmailAddress', $args);
-		if(!$output->toBool()) return $this->stop($output->getMessage());
+		if(!$output->toBool()) return $output;
 
 		// Remove all values having the member_srl and new_password equal to 'XE_change_emaill_address' from authentication table
 		executeQuery('member.deleteAuthChangeEmailAddress',$args);
@@ -3227,7 +3232,7 @@ class memberController extends member
 	**/
 	function procMemberSpammerManage()
 	{
-		if(!Context::get('is_logged')) return $this->setError('msg_not_permitted');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\NotPermitted;
 
 		$logged_info = Context::get('logged_info');
 		$member_srl = Context::get('member_srl');
@@ -3244,7 +3249,7 @@ class memberController extends member
 		$module_info = $oModuleModel->getModuleInfoByModuleSrl($module_srl, $columnList);
 		$grant = $oModuleModel->getGrant($module_info, $logged_info);
 
-		if(!$grant->manager) return $this->setError('msg_not_permitted');
+		if(!$grant->manager) throw new Rhymix\Framework\Exceptions\NotPermitted;
 
 		$proc_msg = "";
 
diff --git a/modules/member/member.view.php b/modules/member/member.view.php
index 16170a60b..b0010ad7d 100644
--- a/modules/member/member.view.php
+++ b/modules/member/member.view.php
@@ -63,7 +63,7 @@ class memberView extends member
 		$oMemberModel = getModel('member');
 		$logged_info = Context::get('logged_info');
 		// Don't display member info to non-logged user
-		if(!$logged_info->member_srl) return $this->stop('msg_not_permitted');
+		if(!$logged_info->member_srl) throw new Rhymix\Framework\Exceptions\MustLogin;
 
 		$member_srl = Context::get('member_srl');
 		if(!$member_srl && Context::get('is_logged'))
@@ -198,12 +198,12 @@ class memberView extends member
 
 		$oMemberModel = getModel('member');
 		// Get the member information if logged-in
-		if($oMemberModel->isLogged()) return $this->stop('msg_already_logged');
+		if($oMemberModel->isLogged()) throw new Rhymix\Framework\Exception('msg_already_logged');
 		// call a trigger (before) 
 		$trigger_output = ModuleHandler::triggerCall('member.dispMemberSignUpForm', 'before', $member_config);
 		if(!$trigger_output->toBool()) return $trigger_output;
 		// Error appears if the member is not allowed to join
-		if($member_config->enable_join != 'Y') return $this->stop('msg_signup_disabled');
+		if($member_config->enable_join != 'Y') throw new Rhymix\Framework\Exceptions\FeatureDisabled('msg_signup_disabled');
 		
 		$formTags = getAdminView('member')->_getMemberInputTag();
 		Context::set('formTags', $formTags);
@@ -251,7 +251,7 @@ class memberView extends member
 		$oMemberModel = getModel('member');
 		if(!$oMemberModel->isLogged() || empty($logged_info))
 		{
-			return $this->stop('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$_SESSION['rechecked_password_step'] = 'INPUT_PASSWORD';
@@ -294,7 +294,7 @@ class memberView extends member
 
 		$oMemberModel = getModel('member');
 		// A message appears if the user is not logged-in
-		if(!$oMemberModel->isLogged()) return $this->stop('msg_not_logged');
+		if(!$oMemberModel->isLogged()) throw new Rhymix\Framework\Exceptions\MustLogin;
 
 		$logged_info = Context::get('logged_info');
 		$member_srl = $logged_info->member_srl;
@@ -351,13 +351,13 @@ class memberView extends member
 	{
 		if ($this->member_config->features['my_documents'] === false)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 		}
 
 		// A message appears if the user is not logged-in
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 
 		$logged_info = Context::get('logged_info');
@@ -385,12 +385,12 @@ class memberView extends member
 	{
 		if ($this->member_config->features['my_comments'] === false)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 		}
 
 		$oMemberModel = getModel('member');
 		// A message appears if the user is not logged-in
-		if(!$oMemberModel->isLogged()) return $this->stop('msg_not_logged');
+		if(!$oMemberModel->isLogged()) throw new Rhymix\Framework\Exceptions\MustLogin;
 
 		$logged_info = Context::get('logged_info');
 		$member_srl = $logged_info->member_srl;
@@ -417,12 +417,12 @@ class memberView extends member
 	{
 		if ($this->member_config->features['scrapped_documents'] === false)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 		}
 
 		$oMemberModel = getModel('member');
 		// A message appears if the user is not logged-in
-		if(!$oMemberModel->isLogged()) return $this->stop('msg_not_logged');
+		if(!$oMemberModel->isLogged()) throw new Rhymix\Framework\Exceptions\MustLogin;
 
 		$logged_info = Context::get('logged_info');
 		
@@ -447,7 +447,7 @@ class memberView extends member
 		$folder_srl = (int)Context::get('folder_srl');
 		if($folder_srl && !array_filter($folders, function($folder) use($folder_srl) { return $folder->folder_srl == $folder_srl; }))
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		if(!$folder_srl && count($folders))
 		{
@@ -493,12 +493,12 @@ class memberView extends member
 	{
 		if ($this->member_config->features['saved_documents'] === false)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 		}
 
 		$oMemberModel = getModel('member');
 		// A message appears if the user is not logged-in
-		if(!$oMemberModel->isLogged()) return $this->stop('msg_not_logged');
+		if(!$oMemberModel->isLogged()) throw new Rhymix\Framework\Exceptions\MustLogin;
 		// Get the saved document(module_srl is set to member_srl instead)
 		$logged_info = Context::get('logged_info');
 		$args = new stdClass();
@@ -524,13 +524,13 @@ class memberView extends member
 	{
 		if ($this->member_config->features['active_logins'] === false)
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 		}
 
 		$logged_info = Context::get('logged_info');
 		if (!$logged_info->member_srl)
 		{
-			return $this->stop('msg_not_logged');
+			throw new Rhymix\Framework\Exceptions\MustLogin;
 		}
 		
 		$args = new stdClass();
@@ -583,7 +583,7 @@ class memberView extends member
 	{
 		$oMemberModel = getModel('member');
 		// A message appears if the user is not logged-in
-		if(!$oMemberModel->isLogged()) return $this->stop('msg_not_logged');
+		if(!$oMemberModel->isLogged()) throw new Rhymix\Framework\Exceptions\MustLogin;
 
 		$memberConfig = $this->member_config;
 
@@ -615,7 +615,7 @@ class memberView extends member
 	{
 		$oMemberModel = getModel('member');
 		// A message appears if the user is not logged-in
-		if(!$oMemberModel->isLogged()) return $this->stop('msg_not_logged');
+		if(!$oMemberModel->isLogged()) throw new Rhymix\Framework\Exceptions\MustLogin;
 
 		$memberConfig = $this->member_config;
 
@@ -668,7 +668,10 @@ class memberView extends member
 	 */
 	function dispMemberFindAccount()
 	{
-		if(Context::get('is_logged')) return $this->stop('already_logged');
+		if(Context::get('is_logged'))
+		{
+			throw new Rhymix\Framework\Exception('already_logged');
+		}
 
 		$config = $this->member_config;
 
@@ -688,7 +691,7 @@ class memberView extends member
 
 		if(Context::get('is_logged')) 
 		{
-			return $this->stop('already_logged');
+			throw new Rhymix\Framework\Exception('already_logged');
 		}
 
 		if($authMemberSrl)
@@ -765,7 +768,7 @@ class memberView extends member
 	**/
 	function dispMemberSpammer()
 	{
-		if(!Context::get('is_logged')) return $this->setError('msg_not_permitted');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\NotPermitted;
 
 		$member_srl = Context::get('member_srl');
 		$module_srl = Context::get('module_srl');
@@ -776,7 +779,7 @@ class memberView extends member
 		$module_info = $oModuleModel->getModuleInfoByModuleSrl($module_srl, $columnList);
 		$grant = $oModuleModel->getGrant($module_info, Context::get('logged_info'));
 
-		if(!$grant->manager) return $this->setError('msg_not_permitted');
+		if(!$grant->manager) throw new Rhymix\Framework\Exceptions\NotPermitted;
 
 		$oMemberModel = getModel('member');
 
@@ -800,7 +803,7 @@ class memberView extends member
 	{
 		if ($this->member_config->features['nickname_log'] === false || $this->member_config->update_nickname_log != 'Y')
 		{
-			return $this->stop('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\FeatureDisabled;
 		}
 
 		$member_srl = Context::get('member_srl');
@@ -813,7 +816,7 @@ class memberView extends member
 		{
 			if($logged_info->is_admin != 'Y')
 			{
-				return $this->setError('msg_not_permitted');
+				throw new Rhymix\Framework\Exceptions\NotPermitted;
 			}
 		}
 
diff --git a/modules/menu/menu.admin.controller.php b/modules/menu/menu.admin.controller.php
index dad867187..d7ef3a697 100644
--- a/modules/menu/menu.admin.controller.php
+++ b/modules/menu/menu.admin.controller.php
@@ -170,7 +170,7 @@ class menuAdminController extends menu
 	{
 		if(!$moduleInfos || !is_array($moduleInfos) || count($moduleInfos) == 0 || $menuSrl == 0)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		foreach($moduleInfos as $moduleInfo)
@@ -252,7 +252,7 @@ class menuAdminController extends menu
 
 		$oAdmin = getClass('admin');
 		if($menuInfo->title == $oAdmin->getAdminMenuName())
-			return $this->setError('msg_adminmenu_cannot_delete');
+			throw new Rhymix\Framework\Exception('msg_adminmenu_cannot_delete');
 
 		// get menu properies with child menu
 		$phpFile = sprintf("./files/cache/menu/%s.php", $menu_srl);
@@ -283,13 +283,13 @@ class menuAdminController extends menu
 
 		if($isStartmenuInclude)
 		{
-			return $this->setError('msg_cannot_delete_homemenu');
+			throw new Rhymix\Framework\Exception('msg_cannot_delete_homemenu');
 		}
 
 		$output = $this->deleteMenu($menu_srl);
 		if(!$output->toBool())
 		{
-			return $this->setError($output->message);
+			throw new Rhymix\Framework\Exception($output->message);
 		}
 
 		$this->setMessage('success_deleted', 'info');
@@ -389,13 +389,13 @@ class menuAdminController extends menu
 
 		if(!$request->parent_srl || !$request->menu_name)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$this->_setMenuSrl($request->parent_srl, $request->menu_srl);
 		if(!$request->menu_srl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		if($request->is_shortcut == 'Y')
@@ -475,7 +475,7 @@ class menuAdminController extends menu
 			$itemInfo = $oMenuAdminModel->getMenuItemInfo($request->shortcut_target);
 			if(!$itemInfo->menu_item_srl)
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\InvalidRequest;
 			}
 			unset($itemInfo->normal_btn, $itemInfo->hover_btn, $itemInfo->active_btn);
 
@@ -540,7 +540,7 @@ class menuAdminController extends menu
 
 		if($request->module_id && strncasecmp('http', $request->module_id, 4) === 0)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// when menu copy, module already copied
@@ -549,7 +549,7 @@ class menuAdminController extends menu
 			$result = $this->_insertModule($request, $args);
 			if(!$result->toBool())
 			{
-				return $this->setError($result->message);
+				throw new Rhymix\Framework\Exception($result->message);
 			}
 		}
 
@@ -560,7 +560,7 @@ class menuAdminController extends menu
 
 		if(!$request->module_id)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$args->url = $request->module_id;
@@ -625,7 +625,7 @@ class menuAdminController extends menu
 		$output = $oModuleModel->getModuleInfoByMid($request->module_id);
 		if($output->module_srl)
 		{
-			return $this->setError('msg_module_name_exists');
+			throw new Rhymix\Framework\Exception('msg_module_name_exists');
 		}
 
 		$oModuleController = getController('module');
@@ -644,7 +644,7 @@ class menuAdminController extends menu
 
 		if(!$request->menu_item_srl || !$request->menu_name)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// variables set
@@ -671,7 +671,7 @@ class menuAdminController extends menu
 				$newItemInfo = $oMenuAdminModel->getMenuItemInfo($request->shortcut_target);
 				if(!$newItemInfo->menu_item_srl)
 				{
-					return $this->setError('msg_invalid_request');
+					throw new Rhymix\Framework\Exceptions\InvalidRequest;
 				}
 
 				$args->url = $newItemInfo->url;
@@ -691,7 +691,7 @@ class menuAdminController extends menu
 				$output = $oModuleModel->getModuleInfoByMid($request->module_id);
 				if($output->module_srl)
 				{
-					return $this->setError('msg_module_name_exists');
+					throw new Rhymix\Framework\Exception('msg_module_name_exists');
 				}
 			}
 
@@ -699,7 +699,7 @@ class menuAdminController extends menu
 			$moduleInfo = $oModuleModel->getModuleInfoByMid($itemInfo->url);
 			if(!$moduleInfo)
 			{
-				return $this->setError('msg_invalid_request');
+				throw new Rhymix\Framework\Exceptions\InvalidRequest;
 			}
 
 			$moduleInfo->mid = $request->module_id;
@@ -867,7 +867,7 @@ class menuAdminController extends menu
 		$oAdmin = getClass('admin');
 		if($menu_title == $oAdmin->getAdminMenuName() && $itemInfo->parent_srl == 0)
 		{
-			return $this->stop('msg_cannot_delete_for_admin_topmenu');
+			return new BaseObject(-1002, 'msg_cannot_delete_for_admin_topmenu');
 		}
 
 		if($itemInfo->parent_srl) $parent_srl = $itemInfo->parent_srl;
@@ -892,7 +892,7 @@ class menuAdminController extends menu
 		$this->_checkHomeMenuInOriginMenu($originMenu, $siteInfo->mid, $isStartmenuInclude);
 		if($isStartmenuInclude)
 		{
-			return $this->setError('msg_cannot_delete_homemenu');
+			return new BaseObject(-1003, 'msg_cannot_delete_homemenu');
 		}
 
 		$oDB = DB::getInstance();
@@ -990,7 +990,7 @@ class menuAdminController extends menu
 		$output = $this->_deleteMenuItem($oDB, $menuInfo, $node);
 		if(!$output->toBool())
 		{
-			return $this->setError($output->message);
+			throw new Rhymix\Framework\Exception($output->message);
 		}
 
 		if(is_array($node['list']))
@@ -1013,7 +1013,7 @@ class menuAdminController extends menu
 		$source_srl = Context::get('source_srl');	// Same hierarchy's menu item serial number
 		$target_srl = Context::get('target_srl');	// Self menu item serial number
 
-		if(!$mode || !$parent_srl || !$target_srl) return $this->setError('msg_invalid_request');
+		if(!$mode || !$parent_srl || !$target_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oMenuAdminModel = getAdminModel('menu');
 
@@ -1023,7 +1023,7 @@ class menuAdminController extends menu
 		$targetMenuItemInfo = $oMenuAdminModel->getMenuItemInfo($target_srl);
 		if(!$originalItemInfo->menu_item_srl || (!$targetMenuInfo->menu_srl && !$targetMenuItemInfo->menu_item_srl))
 		{
-			return $this->setError('msg_empty_menu_item');
+			throw new Rhymix\Framework\Exception('msg_empty_menu_item');
 		}
 
 		// get menu properies with child menu
@@ -1407,7 +1407,7 @@ class menuAdminController extends menu
 		$oMenuAdminModel = getAdminModel('menu');
 
 		$target_item = $oMenuAdminModel->getMenuItemInfo($target_srl);
-		if($target_item->menu_item_srl != $target_srl) return $this->setError('msg_invalid_request');
+		if($target_item->menu_item_srl != $target_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// Move the menu location(change the order menu appears)
 		if($mode == 'move')
 		{
@@ -1418,7 +1418,7 @@ class menuAdminController extends menu
 			if($source_srl)
 			{
 				$source_item = $oMenuAdminModel->getMenuItemInfo($source_srl);
-				if($source_item->menu_item_srl != $source_srl) return $this->setError('msg_invalid_request');
+				if($source_item->menu_item_srl != $source_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 				$args->listorder = $source_item->listorder-1;
 			}
 			else
diff --git a/modules/menu/menu.admin.model.php b/modules/menu/menu.admin.model.php
index eaeb96206..0de6c60e5 100644
--- a/modules/menu/menu.admin.model.php
+++ b/modules/menu/menu.admin.model.php
@@ -614,7 +614,7 @@ class menuAdminModel extends menu
 		$menuItemSrl = Context::get('menu_item_srl');
 		if(!$menuItemSrl)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$menuItemInfo = $this->getMenuItemInfo($menuItemSrl);
@@ -622,7 +622,7 @@ class menuAdminModel extends menu
 		// if menu is shortcut
 		if($menuItemInfo->is_shortcut == 'Y')
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		// get module info
diff --git a/modules/module/module.admin.controller.php b/modules/module/module.admin.controller.php
index 6c4cd0cf0..60f7c8052 100644
--- a/modules/module/module.admin.controller.php
+++ b/modules/module/module.admin.controller.php
@@ -108,7 +108,7 @@ class moduleAdminController extends module
 		{
 			$mid = trim($args->{"mid_".$i});
 			if(!$mid) continue;
-			if(!preg_match("/^[a-zA-Z]([a-zA-Z0-9_]*)$/i", $mid)) return $this->setError('msg_limit_mid');
+			if(!preg_match("/^[a-zA-Z]([a-zA-Z0-9_]*)$/i", $mid)) throw new Rhymix\Framework\Exception('msg_limit_mid');
 			$browser_title = $args->{"browser_title_".$i};
 			if(!$mid) continue;
 			if($mid && !$browser_title) $browser_title = $mid;
@@ -282,7 +282,7 @@ class moduleAdminController extends module
 		// Get information of the module
 		$columnList = array('module_srl', 'module');
 		$module_info = $oModuleModel->getModuleInfoByModuleSrl($module_srl, $columnList);
-		if(!$module_info) return $this->setError('msg_invalid_request');
+		if(!$module_info) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// Register Admin ID
 		$oModuleController->deleteAdminId($module_srl);
 		$admin_member = Context::get('admin_member');
@@ -509,10 +509,10 @@ class moduleAdminController extends module
 	{
 		$vars = Context::getRequestVars();
 
-		if(!$vars->module_srls) return $this->setError('msg_invalid_request');
+		if(!$vars->module_srls) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$module_srls = explode(',',$vars->module_srls);
-		if(count($module_srls) < 1) return $this->setError('msg_invalid_request');
+		if(count($module_srls) < 1) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oModuleModel = getModel('module');
 		$oModuleController= getController('module');
@@ -564,10 +564,10 @@ class moduleAdminController extends module
 	function procModuleAdminModuleGrantSetup()
 	{
 		$module_srls = Context::get('module_srls');
-		if(!$module_srls) return $this->setError('msg_invalid_request');
+		if(!$module_srls) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$modules = explode(',',$module_srls);
-		if(count($modules) < 1) return $this->setError('msg_invalid_request');
+		if(count($modules) < 1) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oModuleController = getController('module');
 		$oModuleModel = getModel('module');
@@ -676,7 +676,7 @@ class moduleAdminController extends module
 		// if args->name is empty, random generate for user define language
 		if(empty($args->name)) $args->name = 'userLang'.date('YmdHis').''.sprintf('%03d', mt_rand(0, 100));
 
-		if(!$args->name) return $this->setError('msg_invalid_request');
+		if(!$args->name) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// Check whether a language code exists
 		$output = executeQueryArray('module.getLang', $args);
 		if(!$output->toBool()) return $output;
@@ -723,7 +723,7 @@ class moduleAdminController extends module
 		$args->name = str_replace(' ','_',Context::get('name'));
 		$args->lang_name = str_replace(' ','_',Context::get('lang_name'));
 		if(!empty($args->lang_name)) $args->name = $args->lang_name;
-		if(!$args->name) return $this->setError('msg_invalid_request');
+		if(!$args->name) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$output = executeQuery('module.deleteLang', $args);
 		if(!$output->toBool()) return $output;
@@ -737,7 +737,7 @@ class moduleAdminController extends module
 
 	function procModuleAdminGetList()
 	{
-		if(!Context::get('is_logged')) return $this->setError('msg_not_permitted');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\NotPermitted;
 
 		$oModuleController = getController('module');
 		$oModuleModel = getModel('module');
@@ -939,7 +939,7 @@ class moduleAdminController extends module
 	{
 		if(!$moduleSrl && !$mid)
 		{
-			return $this->stop(-1, 'msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oModuleModel = getModel('module');
@@ -955,7 +955,7 @@ class moduleAdminController extends module
 
 		if(!$moduleInfo)
 		{
-			return $this->stop(-1, 'msg_module_not_exists');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$skinTargetValue = ($skinType == 'M') ? 'mskin' : 'skin';
@@ -1004,7 +1004,7 @@ class moduleAdminController extends module
 
 		if(!$menuItemSrl)
 		{
-			return $this->stop(-1, 'msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$oModuleModel = getModel('module');
diff --git a/modules/module/module.admin.view.php b/modules/module/module.admin.view.php
index 4af61b9a0..9f7bc3dbb 100644
--- a/modules/module/module.admin.view.php
+++ b/modules/module/module.admin.view.php
@@ -165,7 +165,7 @@ class moduleAdminView extends module
 		$module_srls = Context::get('module_srls');
 
 		$modules = explode(',',$module_srls);
-		if(!count($modules)) if(!$module_srls) return $this->setError('msg_invalid_request');
+		if(!count($modules)) if(!$module_srls) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oModuleModel = getModel('module');
 		$columnList = array('module_srl', 'module');
@@ -201,7 +201,7 @@ class moduleAdminView extends module
 		$module_srls = Context::get('module_srls');
 
 		$modules = explode(',',$module_srls);
-		if(!count($modules)) if(!$module_srls) return $this->setError('msg_invalid_request');
+		if(!count($modules)) if(!$module_srls) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// pre-define variables because you can get contents from other module (call by reference)
 		$content = '';
 		// Call a trigger for additional settings
@@ -224,7 +224,7 @@ class moduleAdminView extends module
 		$module_srls = Context::get('module_srls');
 
 		$modules = explode(',',$module_srls);
-		if(!count($modules)) if(!$module_srls) return $this->setError('msg_invalid_request');
+		if(!count($modules)) if(!$module_srls) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oModuleModel = getModel('module');
 		$columnList = array('module_srl', 'module', 'site_srl');
diff --git a/modules/module/module.controller.php b/modules/module/module.controller.php
index f899ff223..6f24c72dd 100644
--- a/modules/module/module.controller.php
+++ b/modules/module/module.controller.php
@@ -1078,7 +1078,10 @@ class moduleController extends module
 		if ($ajax) Context::setRequestMethod('JSON');
 
 		$logged_info = Context::get('logged_info');
-		if($logged_info->is_admin !='Y' && !$logged_info->is_site_admin) return $this->setError('msg_not_permitted');
+		if($logged_info->is_admin !='Y' && !$logged_info->is_site_admin)
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
+		}
 
 		$vars = Context::gets('addfile','filter');
 		$attributeNames = Context::get('attribute_name');
@@ -1107,7 +1110,7 @@ class moduleController extends module
 			$filter = array_map('trim', explode(',',$vars->filter));
 			if (!in_array($ext, $filter))
 			{
-				return $this->setError('msg_error_occured');
+				throw new Rhymix\Framework\Exception('msg_error_occured');
 			}
 		}
 
@@ -1122,10 +1125,10 @@ class moduleController extends module
 		// insert
 		else
 		{
-			if(!Context::isUploaded()) return $this->setError('msg_error_occured');
+			if(!Context::isUploaded()) throw new Rhymix\Framework\Exception('msg_error_occured');
 			$addfile = Context::get('addfile');
-			if(!is_uploaded_file($addfile['tmp_name'])) return $this->setError('msg_error_occured');
-			if($vars->addfile['error'] != 0) return $this->setError('msg_error_occured');
+			if(!is_uploaded_file($addfile['tmp_name'])) throw new Rhymix\Framework\Exception('msg_error_occured');
+			if($vars->addfile['error'] != 0) throw new Rhymix\Framework\Exception('msg_error_occured');
 			$output = $this->insertModuleFileBox($vars);
 		}
 
@@ -1224,10 +1227,17 @@ class moduleController extends module
 	function procModuleFileBoxDelete()
 	{
 		$logged_info = Context::get('logged_info');
-		if($logged_info->is_admin !='Y' && !$logged_info->is_site_admin) return $this->setError('msg_not_permitted');
+		if($logged_info->is_admin !='Y' && !$logged_info->is_site_admin)
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
+		}
 
 		$module_filebox_srl = Context::get('module_filebox_srl');
-		if(!$module_filebox_srl) return $this->setError('msg_invalid_request');
+		if(!$module_filebox_srl)
+		{
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
+		}
+		
 		$vars = new stdClass();
 		$vars->module_filebox_srl = $module_filebox_srl;
 		$output = $this->deleteModuleFileBox($vars);
diff --git a/modules/module/module.model.php b/modules/module/module.model.php
index 38dd1ff90..f6ca24970 100644
--- a/modules/module/module.model.php
+++ b/modules/module/module.model.php
@@ -267,8 +267,7 @@ class moduleModel extends module
 
 		if(!$menuItemSrl)
 		{
-			$this->stop(-1, 'msg_invalid_request');
-			return;
+			return new BaseObject(-1, 'msg_invalid_request');
 		}
 
 		$args = new stdClass();
diff --git a/modules/module/module.view.php b/modules/module/module.view.php
index 686846be5..3247a6b8e 100644
--- a/modules/module/module.view.php
+++ b/modules/module/module.view.php
@@ -25,10 +25,10 @@ class moduleView extends module
 		$skin = Context::get('skin');
 		// Get modules/skin information
 		$module_path = sprintf("./modules/%s/", $selected_module);
-		if(!is_dir($module_path)) $this->stop("msg_invalid_request");
+		if(!is_dir($module_path)) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$skin_info_xml = sprintf("%sskins/%s/skin.xml", $module_path, $skin);
-		if(!file_exists($skin_info_xml)) $this->stop("msg_invalid_request");
+		if(!file_exists($skin_info_xml)) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$oModuleModel = getModel('module');
 		$skin_info = $oModuleModel->loadSkinInfo($module_path, $skin);
@@ -123,15 +123,16 @@ class moduleView extends module
 	function dispModuleFileBox()
 	{
 		$logged_info = Context::get('logged_info');
-		if($logged_info->is_admin !='Y' && !$logged_info->is_site_admin) return $this->setError('msg_not_permitted');
-
-		$input_name = Context::get('input');
-		if(!preg_match('/^[a-z0-9_]+$/i', $input_name))
+		if($logged_info->is_admin !='Y' && !$logged_info->is_site_admin)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 
-		if(!$input_name) return $this->setError('msg_not_permitted');
+		$input_name = Context::get('input');
+		if(!$input_name || !preg_match('/^[a-z0-9_]+$/i', $input_name))
+		{
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
+		}
 
 		$addscript = sprintf('<script>//<![CDATA[
 				var selected_filebox_input_name = "%s";
@@ -154,7 +155,10 @@ class moduleView extends module
 	function dispModuleFileBoxAdd()
 	{
 		$logged_info = Context::get('logged_info');
-		if($logged_info->is_admin !='Y' && !$logged_info->is_site_admin) return $this->setError('msg_not_permitted');
+		if($logged_info->is_admin !='Y' && !$logged_info->is_site_admin)
+		{
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
+		}
 
 		$filter = Context::get('filter');
 		if($filter) Context::set('arrfilter',explode(',',$filter));
diff --git a/modules/ncenterlite/ncenterlite.admin.controller.php b/modules/ncenterlite/ncenterlite.admin.controller.php
index fdc3c308a..edf5b4d23 100644
--- a/modules/ncenterlite/ncenterlite.admin.controller.php
+++ b/modules/ncenterlite/ncenterlite.admin.controller.php
@@ -78,7 +78,7 @@ class ncenterliteAdminController extends ncenterlite
 		$output = $oModuleController->insertModuleConfig('ncenterlite', $config);
 		if(!$output->toBool())
 		{
-			return $this->setError('ncenterlite_msg_setting_error');
+			throw new Rhymix\Framework\Exception('ncenterlite_msg_setting_error');
 		}
 
 		$this->setMessage('success_updated');
diff --git a/modules/ncenterlite/ncenterlite.controller.php b/modules/ncenterlite/ncenterlite.controller.php
index 19a45cbc9..e0f01cb63 100644
--- a/modules/ncenterlite/ncenterlite.controller.php
+++ b/modules/ncenterlite/ncenterlite.controller.php
@@ -9,7 +9,7 @@ class ncenterliteController extends ncenterlite
 		$config = $oNcenterliteModel->getConfig();
 		if($config->user_notify_setting != 'Y')
 		{
-			return $this->setError('msg_not_use_user_setting');
+			throw new Rhymix\Framework\Exception('msg_not_use_user_setting');
 		}
 
 		$member_srl = Context::get('member_srl');
@@ -21,7 +21,7 @@ class ncenterliteController extends ncenterlite
 
 		if($logged_info->member_srl != $member_srl && $logged_info->is_admin != 'Y')
 		{
-			return $this->setError('ncenterlite_stop_no_permission_other_user_settings');
+			throw new Rhymix\Framework\Exception('ncenterlite_stop_no_permission_other_user_settings');
 		}
 
 		$user_config = $oNcenterliteModel->getUserConfig($member_srl);
@@ -959,7 +959,7 @@ class ncenterliteController extends ncenterlite
 		$logged_info = Context::get('logged_info');
 		if(!Context::get('is_logged'))
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$output = $this->updateNotifyReadAll($logged_info->member_srl);
@@ -973,7 +973,7 @@ class ncenterliteController extends ncenterlite
 		$notify = Context::get('notify');
 		if(!$logged_info || !$url || !$notify)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		$output = $this->updateNotifyRead($notify, $logged_info->member_srl);
diff --git a/modules/ncenterlite/ncenterlite.view.php b/modules/ncenterlite/ncenterlite.view.php
index 47ddc6059..aca07ec24 100644
--- a/modules/ncenterlite/ncenterlite.view.php
+++ b/modules/ncenterlite/ncenterlite.view.php
@@ -45,13 +45,13 @@ class ncenterliteView extends ncenterlite
 		$config = $oNcenterliteModel->getConfig();
 		if($config->user_notify_setting != 'Y')
 		{
-			return $this->setError('msg_not_use_user_setting');
+			throw new Rhymix\Framework\Exception('msg_not_use_user_setting');
 		}
 
 		$oMemberModel = getModel('member');
 		$member_srl = Context::get('member_srl');
 		$logged_info = Context::get('logged_info');
-		if(!Context::get('is_logged')) return $this->setError('ncenterlite_stop_login_required');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exception('ncenterlite_stop_login_required');
 
 		if($logged_info->is_admin == 'Y' && $member_srl)
 		{
@@ -62,7 +62,7 @@ class ncenterliteView extends ncenterlite
 		{
 			if($member_srl != $logged_info->member_srl)
 			{
-				return $this->setError('ncenterlite_stop_no_permission_other_user');
+				throw new Rhymix\Framework\Exception('ncenterlite_stop_no_permission_other_user');
 			}
 		}
 		$output = $oNcenterliteModel->getUserConfig($member_srl);
diff --git a/modules/page/page.admin.controller.php b/modules/page/page.admin.controller.php
index b4a66f846..8835cf3b5 100644
--- a/modules/page/page.admin.controller.php
+++ b/modules/page/page.admin.controller.php
@@ -131,7 +131,7 @@ class pageAdminController extends page
 	{
 		$module_srl = Context::get('module_srl');
 		$content = Context::get('content');
-		if(!$module_srl) return $this->setError('msg_invalid_request');
+		if(!$module_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		$mcontent = Context::get('mcontent');
 		$type = Context::get('type');
 		// Guhaeom won information page
@@ -301,7 +301,7 @@ class pageAdminController extends page
 
 		if(!$grant->manager)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 
 		$obj = Context::getRequestVars();
diff --git a/modules/page/page.admin.view.php b/modules/page/page.admin.view.php
index 622f95ad9..86ce7b89b 100644
--- a/modules/page/page.admin.view.php
+++ b/modules/page/page.admin.view.php
@@ -163,7 +163,7 @@ class pageAdminView extends page
 	{
 		if($this->module_info->page_type == 'OUTSIDE')
 		{
-			return $this->stop(-1, 'msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 
 		if($this->module_srl)
@@ -186,7 +186,7 @@ class pageAdminView extends page
 		}
 		else
 		{
-			return $this->setError(sprintf('%s method is not exists', $method));
+			throw new Rhymix\Framework\Exception(sprintf('%s method is not exists', $method));
 		}
 		
 		Context::set('module_info', $this->module_info);
diff --git a/modules/page/page.mobile.php b/modules/page/page.mobile.php
index 99f0d5f9c..cc792dbb7 100644
--- a/modules/page/page.mobile.php
+++ b/modules/page/page.mobile.php
@@ -33,8 +33,14 @@ class pageMobile extends pageView
 
 		$page_type_name = strtolower($this->module_info->page_type);
 		$method = '_get' . ucfirst($page_type_name) . 'Content';
-		if (method_exists($this, $method)) $page_content = $this->{$method}();
-		else return $this->setError('%s method is not exists', $method);
+		if (method_exists($this, $method))
+		{
+			$page_content = $this->{$method}();
+		}
+		else
+		{
+			throw new Rhymix\Framework\Exception(sprintf('%s method is not exists', $method));
+		}
 
 		Context::set('module_info', $this->module_info);
 		Context::set('page_content', $page_content);
diff --git a/modules/page/page.view.php b/modules/page/page.view.php
index 6b7dbfe29..e2617f21c 100644
--- a/modules/page/page.view.php
+++ b/modules/page/page.view.php
@@ -50,8 +50,14 @@ class pageView extends page
 
 		$page_type_name = strtolower($this->module_info->page_type);
 		$method = '_get' . ucfirst($page_type_name) . 'Content';
-		if(method_exists($this, $method)) $page_content = $this->{$method}();
-		else return $this->setError('%s method is not exists', $method);
+		if(method_exists($this, $method))
+		{
+			$page_content = $this->{$method}();
+		}
+		else
+		{
+			throw new Rhymix\Framework\Exception(sprintf('%s method is not exists', $method));
+		}
 
 		Context::set('module_info', $this->module_info);
 		Context::set('page_content', $page_content);
diff --git a/modules/point/point.admin.controller.php b/modules/point/point.admin.controller.php
index f750cf855..5996ffc91 100644
--- a/modules/point/point.admin.controller.php
+++ b/modules/point/point.admin.controller.php
@@ -198,7 +198,7 @@ class pointAdminController extends point
 	function procPointAdminInsertPointModuleConfig()
 	{
 		$module_srl = Context::get('target_module_srl');
-		if(!$module_srl) return $this->setError('msg_invalid_request');
+		if(!$module_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// In case of batch configuration of several modules
 		if(preg_match('/^([0-9,]+)$/',$module_srl)) $module_srl = explode(',',$module_srl);
 		else $module_srl = array($module_srl);
@@ -375,7 +375,7 @@ class pointAdminController extends point
 		$position = (int)Context::get('position');
 		$total = (int)Context::get('total');
 
-		if(!file_exists('./files/cache/pointRecal.txt')) return $this->setError('msg_invalid_request');
+		if(!file_exists('./files/cache/pointRecal.txt')) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$idx = 0;
 		$f = fopen("./files/cache/pointRecal.txt","r");
@@ -418,7 +418,7 @@ class pointAdminController extends point
 	function procPointAdminReset()
 	{
 		$module_srl = Context::get('module_srls');
-		if(!$module_srl) return $this->setError('msg_invalid_request');
+		if(!$module_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		// In case of batch configuration of several modules
 		if(preg_match('/^([0-9,]+)$/',$module_srl)) $module_srl = explode(',',$module_srl);
 		else $module_srl = array($module_srl);
diff --git a/modules/poll/poll.admin.controller.php b/modules/poll/poll.admin.controller.php
index a3fd0028f..8be1eae7e 100644
--- a/modules/poll/poll.admin.controller.php
+++ b/modules/poll/poll.admin.controller.php
@@ -44,7 +44,7 @@ class pollAdminController extends poll
 		else $poll_srl_list= explode('|@|', $cart);
 
 		$poll_count = count($poll_srl_list);
-		if(!$poll_count) return $this->stop('msg_cart_is_null');
+		if(!$poll_count) throw new Rhymix\Framework\Exception('msg_cart_is_null');
 		// Delete the post
 		for($i=0;$i<$poll_count;$i++)
 		{
diff --git a/modules/poll/poll.admin.view.php b/modules/poll/poll.admin.view.php
index 3d8a7650b..e65742301 100644
--- a/modules/poll/poll.admin.view.php
+++ b/modules/poll/poll.admin.view.php
@@ -139,7 +139,7 @@ class pollAdminView extends poll
 		$args->poll_index_srl = Context::get('poll_index_srl');
 
 		$output = executeQuery('poll.getPoll', $args);
-		if(!$output->data) return $this->stop('msg_poll_not_exists');
+		if(!$output->data) throw new Rhymix\Framework\Exception('msg_poll_not_exists');
 
 		$poll = new stdClass();
 		$poll->stop_date = $output->data->stop_date;
@@ -148,7 +148,7 @@ class pollAdminView extends poll
 		$output = executeQuery('poll.getPollTitle', $args);
 		if(!$output->data)
 		{
-			return $this->stop('msg_poll_not_exists');
+			throw new Rhymix\Framework\Exception('msg_poll_not_exists');
 		}
 
 		$tmp = &$poll->poll[$args->poll_index_srl];
diff --git a/modules/poll/poll.controller.php b/modules/poll/poll.controller.php
index 1b836f226..f577b9242 100644
--- a/modules/poll/poll.controller.php
+++ b/modules/poll/poll.controller.php
@@ -102,7 +102,7 @@ class pollController extends poll
 			}
 		}
 
-		if(!count($args->poll)) return $this->setError('cmd_null_item');
+		if(!count($args->poll)) throw new Rhymix\Framework\Exception('cmd_null_item');
 
 		$args->stop_date = $stop_date;
 
@@ -178,12 +178,12 @@ class pollController extends poll
 		$poll_index_srl = (int) Context::get('index_srl');
 		$poll_item_title = Context::get('title');
 
-		if($poll_item_title=='') return $this->setError("msg_item_title_cannot_empty");
+		if($poll_item_title=='') throw new Rhymix\Framework\Exception('msg_item_title_cannot_empty');
 
 		$logged_info = Context::get('logged_info');
-		if(!$logged_info) return $this->setError("msg_cannot_add_item");
+		if(!$logged_info) throw new Rhymix\Framework\Exception('msg_cannot_add_item');
 
-		if(!$poll_srl || !$poll_index_srl) return $this->setError("msg_invalid_request");
+		if(!$poll_srl || !$poll_index_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$args = new stdClass();
 		$args->poll_srl = $poll_srl;
@@ -191,10 +191,10 @@ class pollController extends poll
 		// Get the information related to the survey
 		$columnList = array('poll_type');
 		$output = executeQuery('poll.getPoll', $args, $columnList);
-		if(!$output->data) return $this->setError("poll_no_poll_or_deleted_poll");
+		if(!$output->data) throw new Rhymix\Framework\Exception('poll_no_poll_or_deleted_poll');
 		$type = $output->data->poll_type;
 
-		if(!$this->isAbletoAddItem($type)) return $this->setError("msg_cannot_add_item");
+		if(!$this->isAbletoAddItem($type)) throw new Rhymix\Framework\Exception('msg_cannot_add_item');
 
 		if($logged_info->is_admin != 'Y')
 		{
@@ -227,9 +227,9 @@ class pollController extends poll
 		$poll_item_srl = Context::get('item_srl');
 
 		$logged_info = Context::get('logged_info');
-		if(!$logged_info)  return $this->setError("msg_cannot_delete_item");
+		if(!$logged_info)  throw new Rhymix\Framework\Exception('msg_cannot_delete_item');
 
-		if(!$poll_srl || !$poll_index_srl || !$poll_item_srl) return $this->setError("msg_invalid_request");
+		if(!$poll_srl || !$poll_index_srl || !$poll_item_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$args = new stdClass();
 		$args->poll_srl = $poll_srl;
@@ -245,11 +245,11 @@ class pollController extends poll
 		// Get the information related to the survey
 		$columnList = array('member_srl');
 		$output = executeQuery('poll.getPoll', $args, $columnList);
-		if(!$output->data) return $this->setError("poll_no_poll_or_deleted_poll");
+		if(!$output->data) throw new Rhymix\Framework\Exception('poll_no_poll_or_deleted_poll');
 		$poll_member_srl = $output->data->member_srl;
 
-		if($add_user_srl!=$logged_info->member_srl && $poll_member_srl!=$logged_info->member_srl) return $this->setError("msg_cannot_delete_item");
-		if($poll_count>0) return $this->setError("msg_cannot_delete_item_poll_exist");
+		if($add_user_srl!=$logged_info->member_srl && $poll_member_srl!=$logged_info->member_srl) throw new Rhymix\Framework\Exception('msg_cannot_delete_item');
+		if($poll_count>0) throw new Rhymix\Framework\Exception('msg_cannot_delete_item_poll_exist');
 
 		$oDB = &DB::getInstance();
 		$oDB->begin();
@@ -280,9 +280,9 @@ class pollController extends poll
 		// Get the information related to the survey
 		$columnList = array('poll_count', 'stop_date','poll_type');
 		$output = executeQuery('poll.getPoll', $args, $columnList);
-		if(!$output->data) return $this->setError("poll_no_poll_or_deleted_poll");
+		if(!$output->data) throw new Rhymix\Framework\Exception('poll_no_poll_or_deleted_poll');
 
-		if($output->data->stop_date < date("Ymd")) return $this->setError("msg_cannot_vote");
+		if($output->data->stop_date < date("Ymd")) throw new Rhymix\Framework\Exception('msg_cannot_vote');
 
 		$columnList = array('checkcount');
 		$output = executeQuery('poll.getPollTitle', $args, $columnList);
@@ -290,7 +290,7 @@ class pollController extends poll
 
 		$poll_srl_indexes = Context::get('poll_srl_indexes');
 		$tmp_item_srls = explode(',',$poll_srl_indexes);
-		//if(count($tmp_item_srls)-1>(int)$output->data->checkcount) return $this->setError("msg_exceed_max_select");
+		//if(count($tmp_item_srls)-1>(int)$output->data->checkcount) throw new Rhymix\Framework\Exception('msg_exceed_max_select');
 		for($i=0;$i<count($tmp_item_srls);$i++)
 		{
 			$srl = (int)trim($tmp_item_srls[$i]);
@@ -299,10 +299,10 @@ class pollController extends poll
 		}
 
 		// If there is no response item, display an error
-		if(!count($item_srls)) return $this->setError('msg_check_poll_item');
+		if(!count($item_srls)) throw new Rhymix\Framework\Exception('msg_check_poll_item');
 		// Make sure is the poll has already been taken
 		$oPollModel = getModel('poll');
-		if($oPollModel->isPolled($poll_srl)) return $this->setError('msg_already_poll');
+		if($oPollModel->isPolled($poll_srl)) throw new Rhymix\Framework\Exception('msg_already_poll');
 
 		$oDB = &DB::getInstance();
 		$oDB->begin();
@@ -382,7 +382,7 @@ class pollController extends poll
 	 */
 	function procPollGetList()
 	{
-		if(!Context::get('is_logged')) return $this->setError('msg_not_permitted');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\NotPermitted;
 		$pollSrls = Context::get('poll_srls');
 		if($pollSrls) $pollSrlList = explode(',', $pollSrls);
 
diff --git a/modules/rss/rss.admin.controller.php b/modules/rss/rss.admin.controller.php
index 4de1985fa..5241d5d06 100644
--- a/modules/rss/rss.admin.controller.php
+++ b/modules/rss/rss.admin.controller.php
@@ -70,7 +70,7 @@ class rssAdminController extends rss
 		
 		if(isset($msg['error']))
 		{
-			return $this->setError($msg['error']);
+			throw new Rhymix\Framework\Exception($msg['error']);
 		}
 		else
 		{
@@ -98,7 +98,7 @@ class rssAdminController extends rss
 		
 		if(!count($target_module_srls))
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		foreach($target_module_srls as $module_srl)
@@ -144,7 +144,7 @@ class rssAdminController extends rss
 		$config = getModel('rss')->getConfig();
 		if(!$config->image)
 		{
-			return $this->setError('msg_invalid_request');
+			throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		}
 		
 		FileHandler::removeFile($config->image);
diff --git a/modules/spamfilter/spamfilter.admin.controller.php b/modules/spamfilter/spamfilter.admin.controller.php
index bb154374d..9e4762e1f 100644
--- a/modules/spamfilter/spamfilter.admin.controller.php
+++ b/modules/spamfilter/spamfilter.admin.controller.php
@@ -151,7 +151,7 @@ class spamfilterAdminController extends spamfilter
 			
 			if (mb_strlen($word, 'UTF-8') < 2 || mb_strlen($word, 'UTF-8') > 180)
 			{
-				return $this->setError('msg_invalid_word');
+				throw new Rhymix\Framework\Exception('msg_invalid_word');
 			}
 			
 			$args = new stdClass;
diff --git a/modules/trash/trash.admin.controller.php b/modules/trash/trash.admin.controller.php
index 81b3aa4ec..b863e4613 100644
--- a/modules/trash/trash.admin.controller.php
+++ b/modules/trash/trash.admin.controller.php
@@ -59,9 +59,9 @@ class trashAdminController extends trash
 
 		//module relation data delete...
 		$output = $this->_relationDataDelete($isAll, $is_type, $trashSrls);
-		if(!$output->toBool()) return $this->setError($output->message);
+		if(!$output->toBool()) throw new Rhymix\Framework\Exception($output->message);
 
-		if(!$this->_emptyTrash($trashSrls)) return $this->setError($lang->fail_empty);
+		if(!$this->_emptyTrash($trashSrls)) throw new Rhymix\Framework\Exception($lang->fail_empty);
 
 		$this->setMessage('success_deleted', 'info');
 
@@ -114,14 +114,14 @@ class trashAdminController extends trash
 			{
 				//class file check
 				$classPath = ModuleHandler::getModulePath($oTrashVO->getOriginModule());
-				if(!is_dir(FileHandler::getRealPath($classPath))) return $this->setError('not exist restore module directory');
+				if(!is_dir(FileHandler::getRealPath($classPath))) throw new Rhymix\Framework\Exception('not exist restore module directory');
 
 				$classFile = sprintf('%s%s.admin.controller.php', $classPath, $oTrashVO->getOriginModule());
 				$classFile = FileHandler::getRealPath($classFile);
-				if(!file_exists($classFile)) return $this->setError('not exist restore module class file');
+				if(!file_exists($classFile)) throw new Rhymix\Framework\Exception('not exist restore module class file');
 
 				$oAdminController = getAdminController($oTrashVO->getOriginModule());
-				if(!method_exists($oAdminController, 'emptyTrash')) return $this->setError('not exist restore method in module class file');
+				if(!method_exists($oAdminController, 'emptyTrash')) throw new Rhymix\Framework\Exception('not exist restore method in module class file');
 
 				$output2 = $oAdminController->emptyTrash($oTrashVO->getSerializedObject());
 				if(!$output2->toBool()) return $output;
@@ -154,14 +154,14 @@ class trashAdminController extends trash
 
 				//class file check
 				$classPath = ModuleHandler::getModulePath($output->data->getOriginModule());
-				if(!is_dir(FileHandler::getRealPath($classPath))) return $this->setError('not exist restore module directory');
+				if(!is_dir(FileHandler::getRealPath($classPath))) throw new Rhymix\Framework\Exception('not exist restore module directory');
 
 				$classFile = sprintf('%s%s.admin.controller.php', $classPath, $output->data->getOriginModule());
 				$classFile = FileHandler::getRealPath($classFile);
-				if(!file_exists($classFile)) return $this->setError('not exist restore module class file');
+				if(!file_exists($classFile)) throw new Rhymix\Framework\Exception('not exist restore module class file');
 
 				$oAdminController = getAdminController($output->data->getOriginModule());
-				if(!method_exists($oAdminController, 'restoreTrash')) return $this->setError('not exist restore method in module class file');
+				if(!method_exists($oAdminController, 'restoreTrash')) throw new Rhymix\Framework\Exception('not exist restore method in module class file');
 
 				$originObject = unserialize($output->data->getSerializedObject());
 				$output = $oAdminController->restoreTrash($originObject);
@@ -176,7 +176,7 @@ class trashAdminController extends trash
 			// restore object delete in trash box
 			if(!$this->_emptyTrash($trashSrlList)) {
 				$oDB->rollback();
-				return $this->setError($lang->fail_empty);
+				throw new Rhymix\Framework\Exception($lang->fail_empty);
 			}
 			$oDB->commit();
 		}
@@ -193,7 +193,7 @@ class trashAdminController extends trash
 	 */
 	function procTrashAdminGetList()
 	{
-		if(!Context::get('is_logged')) return $this->setError('msg_not_permitted');
+		if(!Context::get('is_logged')) throw new Rhymix\Framework\Exceptions\NotPermitted;
 		$trashSrls = Context::get('trash_srls');
 		if($trashSrls) $trashSrlList = explode(',', $trashSrls);
 
diff --git a/modules/trash/trash.admin.view.php b/modules/trash/trash.admin.view.php
index f7e07fe0a..12a5fc2ae 100644
--- a/modules/trash/trash.admin.view.php
+++ b/modules/trash/trash.admin.view.php
@@ -98,7 +98,7 @@ class trashAdminView extends trash
 
 		$oTrashModel = getModel('trash');
 		$output = $oTrashModel->getTrash($trash_srl);
-		if(!$output->data->getTrashSrl()) return $this->setError('msg_invalid_request');
+		if(!$output->data->getTrashSrl()) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$originObject = unserialize($output->data->getSerializedObject());
 		if(is_array($originObject)) $originObject = (object)$originObject;
diff --git a/modules/widget/widget.admin.view.php b/modules/widget/widget.admin.view.php
index 712e56610..702b44091 100644
--- a/modules/widget/widget.admin.view.php
+++ b/modules/widget/widget.admin.view.php
@@ -59,7 +59,7 @@ class widgetAdminView extends widget
 	function dispWidgetAdminAddContent()
 	{
 		$module_srl = Context::get('module_srl');
-		if(!$module_srl) return $this->stop("msg_invalid_request");
+		if(!$module_srl) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
 		$document_srl = Context::get('document_srl');
 		$oDocumentModel = getModel('document');
diff --git a/modules/widget/widget.controller.php b/modules/widget/widget.controller.php
index 4bb253a4f..98674cf0c 100644
--- a/modules/widget/widget.controller.php
+++ b/modules/widget/widget.controller.php
@@ -47,8 +47,8 @@ class widgetController extends widget
 	function procWidgetGenerateCode()
 	{
 		$widget = Context::get('selected_widget');
-		if(!$widget) return $this->setError('msg_invalid_request');
-		if(!Context::get('skin')) return $this->setError('msg_widget_skin_is_null');
+		if(!$widget) throw new Rhymix\Framework\Exceptions\InvalidRequest;
+		if(!Context::get('skin')) throw new Rhymix\Framework\Exception('msg_widget_skin_is_null');
 
 		$attribute = $this->arrangeWidgetVars($widget, Context::getRequestVars(), $vars);
 
@@ -63,9 +63,9 @@ class widgetController extends widget
 	function procWidgetGenerateCodeInPage()
 	{
 		$widget = Context::get('selected_widget');
-		if(!$widget) return $this->setError('msg_invalid_request');
+		if(!$widget) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 
-		if(!in_array($widget,array('widgetBox','widgetContent')) && !Context::get('skin')) return $this->setError('msg_widget_skin_is_null');
+		if(!in_array($widget,array('widgetBox','widgetContent')) && !Context::get('skin')) throw new Rhymix\Framework\Exception('msg_widget_skin_is_null');
 
 		$attribute = $this->arrangeWidgetVars($widget, Context::getRequestVars(), $vars);
 		// Wanted results
@@ -112,18 +112,18 @@ class widgetController extends widget
 		$page_info = $oModuleModel->getModuleInfoByModuleSrl($module_srl, $columnList);
 		if(!$page_info->module_srl || $page_info->module != 'page') $err++;
 
-		if($err > 1) return $this->setError('msg_invalid_request');
+		if($err > 1) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		
 		// Check permissions
 		$logged_info = Context::get('logged_info');
 		if (!$logged_info->member_srl)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		$module_grant = $oModuleModel->getGrant($page_info, $logged_info);
 		if (!$module_grant->manager)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		
 		// Enter post
@@ -167,25 +167,25 @@ class widgetController extends widget
 		$oDocumentAdminController = getAdminController('document');
 
 		$oDocument = $oDocumentModel->getDocument($document_srl);
-		if(!$oDocument->isExists()) return $this->setError('msg_invalid_request');
+		if(!$oDocument->isExists()) throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		$module_srl = $oDocument->get('module_srl');
 		
 		// Destination Information Wanted page module
 		$oModuleModel = getModel('module');
 		$columnList = array('module_srl', 'module');
 		$page_info = $oModuleModel->getModuleInfoByModuleSrl($module_srl, $columnList);
-		if(!$page_info->module_srl || $page_info->module != 'page') return $this->setError('msg_invalid_request');
+		if(!$page_info->module_srl || $page_info->module != 'page') throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		
 		// Check permissions
 		$logged_info = Context::get('logged_info');
 		if (!$logged_info->member_srl)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		$module_grant = $oModuleModel->getGrant($page_info, $logged_info);
 		if (!$module_grant->manager)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		
 		$output = $oDocumentAdminController->copyDocumentModule(array($oDocument->get('document_srl')), $oDocument->get('module_srl'),0);
@@ -214,18 +214,18 @@ class widgetController extends widget
 		// Destination Information Wanted page module
 		$oModuleModel = getModel('module');
 		$page_info = $oModuleModel->getModuleInfoByModuleSrl($module_srl);
-		if(!$page_info->module_srl || $page_info->module != 'page') return $this->setError('msg_invalid_request');
+		if(!$page_info->module_srl || $page_info->module != 'page') throw new Rhymix\Framework\Exceptions\InvalidRequest;
 		
 		// Check permissions
 		$logged_info = Context::get('logged_info');
 		if (!$logged_info->member_srl)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		$module_grant = $oModuleModel->getGrant($page_info, $logged_info);
 		if (!$module_grant->manager)
 		{
-			return $this->setError('msg_not_permitted');
+			throw new Rhymix\Framework\Exceptions\NotPermitted;
 		}
 		
 		$output = $oDocumentController->deleteDocument($oDocument->get('document_srl'));