I had the same problem funny we have a very simular setup expect I run Vista x64 I had no issues related to OS as some have had with thier Vista's x32 how ever this CrossFire issue comes with many games so I sorted it by setting up two profiles in CCC one Crossfire and the other one non Crossfire for easy change.
cant remember the shortcuts key for this on top of my head but its in ATI CCC under the advanced section. Setup the two profiles and then just use the keyboard shortcut to change or you can change profiles with just right clicking on the ATI icon at the clock and selecting the other profile. I wouldnt count on a fix for this anytime soon since there are just to few of us out there usning this type of setup. Expensive not many can afford it and when you buy your comp ready built I have only seen a few with dual card setups for decent money.
|