So I've had all sorts of problems even getting this to run. I'm running Steam, I've reinstalled Battleye with both Steam's built-in install, as well as manually updating the .dll I have tried it with the addon files BOTH in steamapps\common\arma 2\addons as well as steamapps\common\arma 2 oa\@dayz\addons, as well as keeping copies in both places at once. I currently can get into a server, but as soon as I click to join a team and enter the game I am kicked back to the server selection screen with an error that reads: username: username uses modified data file: H:\Win7\\Appdata\Local\Arma 2 OA\MPMissionscache\_______ and the blank space at the end has been several different mission filenames such as "dayz_114.chenarus.pbo" When I go to that location in the Appdata folder, I find nothing. Only other pertinent information would be that, as you can obviously see, I have changed the default location of my Appdata folder, but that's not apparently a problem. :(