[RESOLVED] Dreadful mess going from Avast 4.8 to 5.096

[foxy]

Now I have a godawful mess. I tried to install 5.096, and it froze. Rebooted, tried twice more, finally installed it and it refused to start. Hit all the "start this shield" buttons.

Uninstalled 5 with Revo Uninstaller, reinstalled 4.8, but it won't work now. And there's no entry in Revo or the Control Panel for uninstall.

Usually I clean up such a mess manually. Opened Registry Workshop, a great improvement over Regedit, reg keys refuse to delete. Avast4.8 files won't delete from Program Files either. I guess they're protected.

Just activated the A-V in my Comodo-Free Suite, as i had only the Firewall and Defense before. But I hate Comodo and was planning to chuck it very soon. Has about 35 interfaces. Sigh.

Avast isn't running in the background, but I do have almost the entire program folder and about 200 reg keys left over.

My resources: I have both a clone and an image of my C drive from a month ago, when my C-format and reinstall was pristine. I also have complete registry backups from the entire week. ERUNT runs daily at startup. Data is never an issue, as it's backed up onto another computer.

What do you think is my best course now, or rather the one in which I might tear out the least amount of hair?