Using Eddy's methodology, I got SafeZone working on our PC. TY, Eddy!
When I exit SafeZone, however, no program will run (including the Avast Management console). Trying to exit Windows elicits a message that EXPLORER.EXE is busy - and it keeps on being busy, until a hard power off or reset.
Anyone have a clue about why this occurs? Specs are Vista 32-bit SP2, E8400, 2Gb RAM, Avast! 9, .2018 release.