If you can't fix Avast with the attached utility then you will have to do what I did:
Clean reinstall, uninstall using aswclear.exe which you run from safe mode and reboot then install avast from normal mode.
That's what I was forced to do to get Avast 7 up and running!!!!
See no problems with AVAST 7 so far and I am able to update the definitions.
I had that error code 11 message while trying to run that utility and I couldn't uninstall or repair
Avast in ADD/REMOVE PROGRAMS either.
I never had a problem with AVAST before and am a little worried about installing this on my new
computer when it's hooked up because of this.
I wish someone would clarify what exactly caused the initial problem and assure me that something like
this won't happen again!