Hi, your issue is simple to solve. Simply follow these steps: 1) Go to install/update tab on DayZ Commander 2)Re-install the Arma 2 OA Beta Patch to the most recent version (currently 112555) (Note: You might get the error, "wrong cd key", simply click ok and continue the process) 3) Close DayZ Commander 4) Start DayZ Commander 5) Run your game and join any server :D Source(s): I own a DayZ Overpoch server and deal with players that have issues like this day to day