I am afraid that the provided information is not enough to pinpoint the cause of the encountered problem. Could you isolate the issue in a fully runnable sample (http://blogs.telerik.com/aspnet-ajax/posts/10-09-29/isolating-a-problem-in-a-sample-project.aspx
) and send it so that I can debug it locally? This will allow me to reproduce the problem and to help you resolve it.
It will also be useful if you can include step-by-step instructions for reproducing the issue and the version of the Telerik controls that you are currently using.
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