Error (bug?) in Telerik.Web.UI.WebResource.axd - possibly LoadingPanel

[Richard Freeman]

I am, on occasion (around 40% of the time), getting the following javascript error:

Uncaught TypeError: Cannot call method 'removeChild' of null - Telerik.WebUI.WebResource.axd:2897 My code has successfully completed an ajaxRequest to server side code:

        function OnClientClose(oWnd, args) {

            var arg = args.get_argument()

        if (arg!=null) {

            $find('<%# RadAjaxManager1.ClientID %>').ajaxRequest(arg);
          }
}

All actions appear to have completed correctly, however the loading panel is still showing (I'm using the default panel). It would appear that the LoadingPanel handlers are halting at the error and failing to remove the loadingpanels? Thanks R.

[Iana Tsolova]

Hi Richard,

Indeed, the reason for the loading panel not hide is the javascript error. After it is thrown the javascript used for manipulating the loading panel on the client cannot proceed. To solve the issue, we should find the source the problem and see why the error is thrown at first place. Can you send us a sample code which we can use to replicate the problem?

Kind regards,
Iana
the Telerik team