DavidR,

Thank you for the prompt reply.

I had the previous ais file, so I cleared the disabled version and reinstalled, then updated.

It is now working.

I had thought there would be a way to do this this without a reinstall. Being this is the second time this year that a false internet scanner has bumped Avast, I should perhaps purchase an active malware blocker.

Again, thank you for your help,
david