After downloading and running new driver update version I'v got message "... unable to run ... CIMManifest.exe cause of incompatibility 64-bit version...". Seems than control panel downloads wrong version of driver. When I download driver from amd site all ok.
I am on Windows 7 64 bit, and I never update anything Via Automatically, I have found better results from manual installation. The one issue I have from doing this is when my finger becomes " click happy " and deletes a reg key that I shouldn't have. For most people though the AMD Uninstall utility should be plenty.