This exception is thrown when a requested assembly resources does not exist in the designated assembly. Do you have any explicit embedded script references in the RadScriptManager on the page (added in the markup or through code)?
If there are no explicit script references, please try the following:
- Replace RadScriptManager with ScriptManager;
- Observe the requests with Firebug or Fiddler to see if there are any failing requets;
- If there are, please use the approach shown in this blog post to get the name of the invalid web resource;
the Telerik team
Register for the Q2 2011 What's New Webinar Week. Mark your calendar for the week starting July 18th and book your seat for a walk through of all the exciting stuff we will ship with the new release!