I am afraid that the provided information is not sufficient enough in order to determine what is going wrong. Could you please send me a small but runnable project that demonstrates the issue? In this way I would be able to examine your current implementation in details and assist you further.
Thank you in advance for the cooperation.
Regarding your second question, the unminified source code is not included in the trial package. Only commercial licence holders have access to the full source code.
the Telerik team
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