42040 = vps file was destroyed

hi guys.,
i was stuffing around with my computer (not a good idea) and now i get thi8s message when trying to use avast 4.7
“42040 = vps file was destroyed” .
can any-1 help my poor self *sniff
pigboy

Which is your Windows? 98, Me, XP?
Do you use any other antivirus in your computer?

Can you try to repair your installation?
Go to Control Panel > Add/Remove programs > avast! antivirus > Remove. Then choose Repair function in the popup window (Repair). You must be connected to the internet while repairing.

If this does not help, can you uninstall / boot / install / boot again?