User-340852775 posted
Thanks for all your help. I was missing the following in our web.config file.
<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
/>
http://geekswithblogs.net/lorint/archive/2007/03/28/110161.aspx
Now everything works!