Hello I just got Vista Ultimate x64 bit today and I got all excited to test things out. When I've tried installing 64bit drivers dled directly from ATI's website, I've had a few issues with custom installation. I've somehow managed to install it properly after I've selected "express install" instead. However, I'm unable to start Catalyst Control Center because it says "Catalyst Control Center cannot be started because current active GPU is not supported".
Maybe you selected the wrong gpu series on ATI's site?
Just to be safe, redownload 8.10 again, making sure you specify the correct gpu and OS and reinstall the new download (after uninstalling your current 8.10).
I had that problem as well. But I'm using crossfire. Had to disable one card, and uninstall the other. Then scan for hardware changes and reboot. Then enable the other card and reboot. CCC found both cards after that.
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