I would suggest a post on the XWA Upgrade forums (
http://www.xwaupgrade.com) (look for the link in the left menu) in the "Soft/Hardware Problems" forum. I know someone has seen this problem, but I can't seem to find the solution on Google...I think at least Avenger One would know about it. It might have have something to do with the Application Compatibility Toolkit, but again, I didn't see anything on Google about this.