I found a myraid of responses to your issue. The following quote sums it better than I can.
QUOTE
The consensus of the people who dealt with this issue is that is caused by Catalyst
Control Center interacting badly with .NET. The solutions were found by trial and
error, with different combinations of uninstalls, reinstalls, and repairs. If you
have the time and patience, search google for "Broadcast event Window 1.0.5", and
experiment with the procedures followed by the users who were successful.
Quote taken from:
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