Hi junglee,
So here was under what conditions, and in what sequence, I did my installations regarding Avast:
Did a clean install of Windows 8 RTM via ISO (last week).
Installed Avast 8.0.1497 via a clean install.
Discovered Avast 2014 went GA yesterday.
Downloaded the above.
Downloaded ASWClear (to prep for a clean uninstall of Avast).
Uninstalled Avast 8.0.1497 via normal uninstaller.
Followed up with ASWClear cleanup in safe mode via auto-prompt from same.
Installed Avast 2014 GA as a (presumed) clean install.
Now, I did read the fine print (in the link provided previously) and Avast states the following:
It should be possible to install this version on top of your existing avast! installation (all settings should be preserved). Or you can use in-product updater.
However, since I observed multiple "shoulds" in the above, I took no chances and did a clean install. Hope this helps and thanks for your comments as well. Cheers and good luck.
my2cents
PS - Wow, you should be very proud of your 2,500 contributions in such a short time as well. I hope you get a quick VIP consideration over here for your previous (and continuing) efforts over there. BTW, is your user name the same here as over there? If not, please find a way to convey your dual role as a (now) contributor to both forums so the Admins can take all things into consideration.