It allowed me to run ccleaner no problems, it was only when it tried to down load the update from piriform that the problem occurred.
Anyway, if you have CCleaner installed - and used - then there is no reason to have any "registry booster" software: CCleaner is enough
Actually no, if I run ccleaner and then registry booster the registry booster invariably finds some more.
What's bugging me is the difficulty of telling it it's a false positive.
I really only posted this for info not help.