Hi Tom,
Have you fixed the problem yet?
I tried to recreate the scenario, but noticed that some of the code in your head tag is custom user controls.
If you still have the same problem, you can try two things:
1) try removing the runat="Server" attribute from the head tag
2) try removing some lines from the head tag and see which one is causing the trouble
Sincerely yours,
Lini
the Telerik team