Index: branches/5.2.x/core/kernel/managers/request_manager.php
===================================================================
diff -u -r16828 -r16830
--- branches/5.2.x/core/kernel/managers/request_manager.php	(.../request_manager.php)	(revision 16828)
+++ branches/5.2.x/core/kernel/managers/request_manager.php	(.../request_manager.php)	(revision 16830)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: request_manager.php 16828 2025-05-26 15:20:54Z alex $
+* @version	$Id: request_manager.php 16830 2025-05-27 13:25:51Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2010 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -145,10 +145,15 @@
 			$this->Application->UnitConfigReader->runAfterConfigRead($regs[1]);
 		}
 
-		if ( !$this->Application->eventImplemented($event) ) {
-			$false = false;
+		try {
+			$this->Application->eventImplemented($event);
+		}
+		catch ( Exception $e ) {
+			if ( !$this->Application->isAdmin && !$this->Application->isDebugMode() ) {
+				$this->Application->UrlManager->show404();
+			}
 
-			return $false;
+			throw $e;
 		}
 
 		$event->SetRedirectParam('opener', 's'); // stay on same page after event is called