I have tried reporting this via Avast Support but just get bounced as it applies to AntiVirus Free product.
Can someone get a message to the appropriate Avast Section/Staff to fix this problem?

What needs to be done:

  1. Update the Installer Downloads page with a warning about this change for XP & Vista
  2. Update the Installer FAQ article (which currently implies it work OK for XP & Vista)
  3. Get the Installer updated to give a sensible error message about this problem

Doug Collins - Tech Support Engineer - London UK