RadWindow alongside advanced form

[Jon]

When I use the advanced form (adapted from the demo on this site) to add extra fields to the admin form I have a problem.  With this in place I find that if I try and access a RadWindow on the form load it only works on rare occasions.

When I remove the <telerik:RadScriptReference Path="AdvancedForm.js" /> line from the script manager the radwindow works - although obviously the advanced form functionality then fails.

Any suggestions on what maybe happening here.  My code for finding the radwindow is shown below 

var oWnd = $find("<%=uxFilterRadWindow.ClientId %>");
oWnd.show();

Regards

Jon

[Jon]

Oddly after a reboot of my PC this doesn't seem to be problematic now.  Fingers crossed it was just a temporary abberation