Index: trunk/kernel/admin_templates/incs/catalog.js
===================================================================
diff -u -r5084 -r5137
--- trunk/kernel/admin_templates/incs/catalog.js	(.../catalog.js)	(revision 5084)
+++ trunk/kernel/admin_templates/incs/catalog.js	(.../catalog.js)	(revision 5137)
@@ -73,7 +73,9 @@
 		document.getElementById($params[0]).innerHTML = $text;
 	}
 
-	if (isset($Debugger)) $Debugger.Clear();
+	if (typeof($Debugger) != 'undefined') {
+		$Debugger.Clear();
+	}
 }
 
 Catalog.prototype.errorCallback = function($request, $params, $object) {