diff -r 155f73184d75 static/js/noc/core/ModelApplication.js
--- a/static/js/noc/core/ModelApplication.js    Fri Aug 29 15:37:03 2014 +0300
+++ b/static/js/noc/core/ModelApplication.js    Tue Sep 02 10:40:33 2014 +0400
@@ -1179,6 +1179,9 @@
             check = function(seq) {
                 for(var i = 0; i < seq.length; i++) {
                     var v = seq[i];
+                    if(!v) {
+                        continue;
+                    }
                     if(v.groupEdit === true) {
                         return true;
                     }
@@ -1216,7 +1219,7 @@
                             break;
                         case "checkbox":
                         case "checkboxfield":
-                            if(v.groupEdit === true) {
+                            if(v && v.groupEdit === true) {
                                 x = {
                                     xtype: "combobox",
                                     fieldLabel: v.boxLabel,