I've got one of this error message...
But I click ok (the only option) so fast that I did not realise it was avast.
I thought it was Microsoft Word instead.
I'll take a look closer next time.
If you update to the new (last) VPS version, will it be ok in your computer?
avast has an antipiracy feature when coping (cloning) HDD.
In fact it does now 'want' you to upgrade but just add a new, working key, for Home version.
If you click ashavast.exe, will you be able to get the splash window and the write (paste) the new key?
If you can't, just run ashdisp.exe and, from the 'a' blue icon, choose About dialog and add the new (working) key