Hello Arindam,
You need to cancel the Reload command first. Note that the sender argument in the oCCWindow function is actually the RadWindow object itself so there is no need to get a reference to that RadWindow again:
As for the first problem, I suggest to upgrade to SP1 that was released on 2nd of April. If you still experience problems after that, please open a support ticket and send us a sample project (make sure it can be run locally) where the problem could be reproduced.
Kind regards,
Georgi Tunev
the Telerik team
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