Just recently, I have attempted to play Arma 2: Combined Operations. However, when I tried to load it as of today, it has given me this error message that says "This game is currently unavailable ( Application Running ). Obviously, the game is not running. I cannot find any related applications through task manager, I have used msconfig to turn off all background tasks, restarted, defragged, cleaned the registry, and even did a hard reset, but it does not appear to be working. Also, I have attempted to run all the other ARMA 2 games I have, including ARMA 2 (Vanilla) and it's expansions, Private Military Company, British Armed Forces, and Operation Arrowhead. Of all of them, only the vanilla one will run. The rest crash on startup.