I am experiencing the same problem with the latest version of CC. After scanning the registry, I back-up it up and then click the FIX button. I confirm to fix and then nothing happens. The registry issues remain as issues. It's like that part of the function has been disabled.
I un-installed CC and then reinstalled (twice) only to experience the very same thing again. I run Windows XP SP2 Media Edition and Norton Internet Security 2008. Previous versions of CC worked fine without problems.
I would like to go back to using my previous version of CC, but I'm am unable to download it from the web site. The web site only offers the latest version for downloading.