Are you using Windows 7 and turned off the Areo desktop??
that is what has been causing what you discribed, turn it back on and it works fine, yes you may have other programs that need it it off, I know Surfcam is like that, crashes\locks up with areo on.
by the way this has been fix in Win8
Message was edited by: Lenny Bucholz
Thank you very much the Aero desktop was turned off so I turned it on and it appears to be fixed.