I fixed the problems the update gave me by 1. Re installing BattleEye. 2. Verifying integrity of game cache on ARMA II and ARMA II OA on steam. To do this you have to right click the game and go to properties. then you hit the local files tab and press 'verify integrity of game cache'. 3. I also had to launch ARMA II and ARMA II OA once to refresh the serial key. If you do all these steps your game should work just fine.