First, check ATI's website and see if you really are using the latest. If you are, and they are beta drivers, try using the latest non-beta drivers they have.
The only other option is to switch off hardware acceleration in pIRender. It will be much slower but it will work.
I think that we may have a fix for this in the 3.0.3 beta version -- email support at wondertouch dot com so I can add you to the beta test.
Alan.
http://www.wondertouch.com