Thanks again for making the post. Unfortunately it is occurring due to some changes in the Q3 build. Good news is that we already identified and fixed the problem. In that regard, please open up a support ticket (referencing this post) and we will attach an internal build for you.
However, the build will be available in the coming Q1 release. Please let us know if the above mentioned solution works for you as well.
P.S. Opening up a support ticket is just a policy for providing internal builds to fast address customer exceptions.
the Telerik team
Registration for Q1 2011 What’s New Webinar Week is now open. Mark your calendar for the week starting March 21st and book your seat
for a walk through all the exciting stuff we ship with the new release!