We understand your concerns. However, without being able to reproduce the exception on our side we could not tell for sure what is the reason that is causing it - the provided information is not enough sufficient for us in order to reproduce the issue .
If you manage to reproduce the issue in sample please send it back to us and we will be able to continue our investigation and provide you with a solution.
Meanwhile, if you have any additional questions or concerns regarding Telerik controls, please let us know.
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