I uninstalled Avast a few times and reinstalled it. I never put in my Registration yet.
I never used the demo version that long. Before I update to the latest version, I didn't even use the demo when I installed it a 4 weeks ago. I registered it and had no problem. I get message through Avast update that there was a new version out. I tried to update through the updating tool but it wouldn't let me for some reason. So I down loaded a new version, uninstalled the old version, reboot, cleaned up what was left, reboot and re-installed the new version I started to get the error message.