Index: trunk/core/kernel/application.php
===================================================================
diff -u -r2015 -r2112
--- trunk/core/kernel/application.php	(.../application.php)	(revision 2015)
+++ trunk/core/kernel/application.php	(.../application.php)	(revision 2112)
@@ -1123,6 +1123,18 @@
 	}
 	
 	/**
+	 * Returns true if config exists and is allowed for reading
+	 *
+	 * @param string $prefix
+	 * @return bool
+	 */
+	function prefixRegistred($prefix)
+	{
+		$unit_config_reader =& $this->recallObject('kUnitConfigReader');
+		return $unit_config_reader->prefixRegistred($prefix);
+	}
+	
+	/**
 	 * Splits any mixing of prefix and
 	 * special into correct ones
 	 *
@@ -1307,6 +1319,7 @@
 		
 		return 0;
 	}
+	
 }
 
 ?>
\ No newline at end of file
Index: trunk/core/kernel/utility/unit_config_reader.php
===================================================================
diff -u -r2060 -r2112
--- trunk/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 2060)
+++ trunk/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 2112)
@@ -56,6 +56,17 @@
 		}
 		
 		/**
+		 * Returns true if config exists and is allowed for reading
+		 *
+		 * @param string $prefix
+		 * @return bool
+		 */
+		function prefixRegistred($prefix)
+		{
+			return isset($this->configData[$prefix]) ? true : false;
+		}
+		
+		/**
 		 * Read configs from all directories
 		 * on path specified
 		 *
@@ -338,7 +349,7 @@
 		 */
 		function getUnitOption($prefix,$name)
 		{
-			return isset($this->configData[$prefix][$name])?$this->configData[$prefix][$name]:false;
+			return isset($this->configData[$prefix][$name]) ? $this->configData[$prefix][$name] : false;
 		}
 		
 		/**
@@ -350,7 +361,7 @@
 		 */
 		function getUnitOptions($prefix)
 		{
-			return isset($this->configData[$prefix])?$this->configData[$prefix]:false;
+			return $this->prefixRegistred($prefix) ? $this->configData[$prefix] : false;
 		}
 		
 		/**
@@ -363,7 +374,7 @@
 		 */
 		function setUnitOption($prefix,$name,$value)
 		{
-			$this->configData[$prefix][$name]=$value;
+			$this->configData[$prefix][$name] = $value;
 		}
 		
 		function getPrefixByParamName($paramName,$prefix)
Index: trunk/core/kernel/event_manager.php
===================================================================
diff -u -r2060 -r2112
--- trunk/core/kernel/event_manager.php	(.../event_manager.php)	(revision 2060)
+++ trunk/core/kernel/event_manager.php	(.../event_manager.php)	(revision 2112)
@@ -88,17 +88,26 @@
 		 */
 		function HandleEvent(&$event)
 		{
+			if( !$this->Application->prefixRegistred($event->Prefix) )
+			{
+				trigger_error('Prefix <b>'.$event->Prefix.'</b> not registred (requested event <b>'.$event->Name.'</b>)', E_USER_NOTICE);
+				return false;
+			}
+			
 			if (!$event->SkipBeforeHooks) {
 				$this->processHooks($event, hBEFORE);
-				if ($event->status == erFATAL) return;
+				if ($event->status == erFATAL) return true;
 			}
 			
 			$event_handler =& $this->Application->recallObject($event->Prefix.'_EventHandler');
 			$event_handler->processEvent($event);
-			if ($event->status == erFATAL) return;
+			
+			if ($event->status == erFATAL) return true;
 			if (!$event->SkipAfterHooks) {
 				$this->processHooks($event, hAFTER);
 			}
+			
+			return true;
 		}
 		
 		function ProcessRequest()