I have no mods but it also wont let me disable them and I've looked in all the game files looking for mention of these anywhere in there but I cant see them. They stay there even after I have wiped and reinstalled ARMA 2 OA.
---------- Post added at 06:58 ---------- Previous post was at 06:45 ----------
I found the CA addon in my documents but that just contains maps and missions for takistan, cheronerus and zargabard. I don't think this is the cause but the dummy addon is still eluding me.