I can’t believe… I’ve suffered twice with a-squared… I just use it now as a third opinion… too many false positives, no reliable go back features (you can lose your registry) and bad quarantine encryption…

Did you consider reformating and starting again?
I suggest you make a backup of Windows Registry as an ordinary backup routine… Try ERUNT (http://www.larshederer.homepage.t-online.de/erunt/).

Seems that you can delete all the files…

But really, if your computer has a damaged registry, consider reformating and start again…