I think I may have unwittingly installed both AA and AC. The scan button does not respond but I have no trouble with the AA play button. I'd just like to know how I can remove (other than just disabling, if that's an option) AC and keep all the scanned information along with all of AA. That is all. :)
the scanned information is stored (for AC) in WTF\Account\<you>\SavedVariables\Auctioneer.lua. However, if you don't have AC loaded, this file won't load either If you want to use AC prices with AA, you need to import them into the Auc-Stat-Classic, which you can do by having both AC and AA running at the same time, and typing: /aadv stat classic import