Hi,
You may refer to this thread which discusses the similar problem:
http://social.msdn.microsoft.com/Forums/en-US/vbgeneral/thread/78435f28-ead1-45a5-baaf-1ff181bdb7d5/
This issue is related to Visual Basic, I would redirect you to the Visual Basic forum for assistance.
http://social.msdn.microsoft.com/Forums/en-US/vbgeneral/threads
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