This happens if you dont have the Silverlight Debugger Attached to the Web project in your solution.
Right Click the Web Project and go to Web tab under properties. Please check the Silverligth Debugger as shown in the Image below, you will be able to Debug
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#1 by Kiri on November 24, 2010 - 2:16 pm
Quote
Thank u mate. I'm looking for this one for couple of days.
You save me….
– Kiri Kamal