whenever I get a problem with a new
driver (very rare..) I completely remove the existing
driver and re-install.
this guide tells you how to completely scrub the old ones
TweakGuides.com - ATI Catalyst Tweak Guide
these beta (preview) types, sometimes give problems, so that the CCC doesn't function
- probably because they're not geared to overwrite the previous version, which is understandable, given that they're kinda experimental anyway..
- whenever a problem occurs, I just scrub completely and start again - it always seems to work for me..
BTW, the latest (10.3a) works fine, but did require the scrubbing process to restore the CCC..