diff --git management/univention-management-console/www/management/error.html management/univention-management-console/www/management/error.html
index 2fdb520e62..08ca4e7a1d 100644
--- management/univention-management-console/www/management/error.html
+++ management/univention-management-console/www/management/error.html
@@ -23,12 +23,8 @@
 					setTimeout(function() { /* dependency problem umc/dialog is not yet require()d in umc/tools*/
 						var data = json.parse(entities.decode(%ERROR%));
 						var info = tools.parseError(data);
-						var title = info.title || _('HTTP Error %s', info.status);
-						var traceback = info.traceback || '';
-						var message = info.message;
-
-						var error_message = title + '\n' + message + '\n' + traceback;
-						tools.showTracebackDialog(error_message, message, title).always(function() {
+						info.title = info.title || _('HTTP Error %s', info.status);
+						tools.getErrorHandler().displayError(info).always(function() {
 							setTimeout(function() {
 								window.location.href = data.location || '/univention/management/';
 							}, 1000);
diff --git management/univention-web/js/tools.js management/univention-web/js/tools.js
index 158e9831de..57b16363dc 100644
--- management/univention-web/js/tools.js
+++ management/univention-web/js/tools.js
@@ -485,7 +485,7 @@ define([
 			return this._request(lang.mixin({
 				url: '/univention/' + command,
 				data: _body,
-				errorHandler: this.__getErrorHandler(handleErrors),
+				errorHandler: this.getErrorHandler(handleErrors),
 				flavor: flavor,
 				headers: {},
 				withCredentials: false,
@@ -563,7 +563,7 @@ define([
 			}
 		},
 
-		__getErrorHandler: function(handleErrors) {
+		getErrorHandler: function(handleErrors) {
 			var custom = {};
 			if (handleErrors === false) {
 				custom = {
@@ -670,7 +670,7 @@ define([
 
 				displayTraceback: function(info) {
 					topic.publish('/umc/actions', 'error', 'traceback');
-					tools.showTracebackDialog(info.traceback, info.title + '\n\n' + info.message, null, custom.hideInformVendor);
+					return tools.showTracebackDialog(info.traceback, info.title + '\n\n' + info.message, null, custom.hideInformVendor);
 				}
 			}, custom);
 			return errorHandler;
@@ -865,7 +865,7 @@ define([
 			if (401 === info.status) {
 				return; /*already handled*/
 			}
-			this.__getErrorHandler(handleErrors ? handleErrors : {}).error(info);
+			this.getErrorHandler(handleErrors ? handleErrors : {}).error(info);
 		},
 
 		showTracebackDialog: function(message, statusMessage, title, hideInformVendor) {