Hi,

I'm having the same issue described in this thread https://ko.infragistics.com/community/forums/t/84959.aspx (there is no final answer in the thread)

To test, I created a simple website with only one dummy webdatamenu control and still has the problem.

The website works in local pc or https://localhost on dev server, it receives below JavaScript error once I use real url and the control doesn't display.

Line: 671
Error: Unable to get property 'contains' of undefined or null reference

I also tried GAC, adding configuration to web config file and moving the dll files into Bin folder, and copied over all images and javascript files

I'm using Infragistics 16.2 and CLR 4.0

Thanks in advance for our help.

/* VS 05/16/2013 Bug 142499 repeat: images in Firefox without cache */
 __resizeItems: function(childItem, grpSettings, group, repeat)
 {
     /* R.K. 11/07/2016 Bug #221700: Setting Font-Bold="true" doesn't work for horizontal items */
     if (childItem.get_element().classList.contains('igdm_MenuItemHorizontalRoot'))
     {
         var _parent = childItem.get_element().parentNode,
                _menuOrientation = grpSettings.get_orientation() == $IG.Orientation.Horizontal;
         if (_menuOrientation)
         {