"Dispatcher processing has been suspended, but messages are still being processed" InvalidOperationException when calling ShowDialog in Windows 7

Hi All,

Actually We are using VS2010 in windows7. We are using ShowDialog for saving the configuration in WPF application. when we using Windows Xp its work properly but in Windows 7 "Dispatcher processing has been suspended, but messages are still being processed." Even we are using 32 Bit Os only. Could you please anyone suggest me or provide a solution to resolve this issue.

Thanks and Regards,

Dj