Hello, yesterday I downloaded the CSLA mod for Operation Flashpoint (I use Arma Cold War Assault), I've installed it in the directory:F:\Steam\steamapps\common\arma cold war assault\AddOns. When I click on the launcher shortcut, appears a screen like the game is running, but nothing happen. I've searched on internet for this problems and somebody says that this problem is related to Steam. What should I do?