Crossfire file changed \crossfire.exe? Can't install crossfire...

Ok so i havent played crossfire in a long while, mainly bc my laptop was poo. but i just got a new laptop that can run it amazingly well, and basically i tried to install crossfire. Firstly, the crossfire downloader is shit, because it never downloads crossfire. It either freezes and closes or just stays frozen. So i tried finding the CF v1102.exe setup file on google, and found one on atomic gamer. I downloaded it, installed it, worked like a charm. the problem is after i got on CF and played one game, the second game i go into closes and i get the little "File is changed \crossfire.exe " popup. Then when i try to open it back up, i can't get into any matches. So i thought maybe it was a corrupted download, so i reinstalled, ran as admin, compatability mode, yada yada yada. So can anyone give me the setup file (Crossfire_SEtup_v1102.exe) that they used that isnt corrupted or anything? also i turned off firewall and ANTIvirus when i was downloading and installing.