Index: trunk/core/units/permissions/permissions_event_handler.php
===================================================================
diff -u -N -r5325 -r5326
--- trunk/core/units/permissions/permissions_event_handler.php	(.../permissions_event_handler.php)	(revision 5325)
+++ trunk/core/units/permissions/permissions_event_handler.php	(.../permissions_event_handler.php)	(revision 5326)
@@ -154,6 +154,10 @@
 
 		if ($delete_ids || $create_sql || $update_sql) {
 			$object->setModifiedFlag();
+			
+			if ($event->Name == 'OnCategorySavePermissions') {
+				$this->Application->StoreVar('PermCache_UpdateRequired', 1);
+			}
 		}
 	}
 }