Well i found he problem. its to do with BattleEye. I had the same problem till i did a little research. The problem lies that Battleeye when installed isnt done properly. You get stuck at loading screen because BattleEye doesnt initiate. This problem can be solved in Several steps. With these steps i helped 2 other friends get rid of the stuck at loading problem. These steps must ONLY be done after youve installed the 2 games and started game up to the menu. For steam users ( not sure about the rest) its possible that Arma 2 Op arrowpoint doesnt allow you to start the game due to an error. just skip it then. If u have the option to start Arma2: Combined op. Start it, for some ppl the game starts for some others it doesnt. ( bad programming?) Shut down steam first. Step One go to: C:\Program Files (x86)\Bohemia Interactive\ArmA\Expansion\BattlEye Uninstall it do it via the folder and not add/remove programs :) Step 2: ftp://downloads.bistudio.com/arma2.c...EyeARMA2OA.exe Download an install. Step 3: Go to http://www.battleye.com/download.html Download the BEclient. dont run it. just Cut. Step 4: With both windows 7 and XP. you will need to have view hidden file option turned on or you wont see AppData. go to (Windows 7) C:\Users\%USERNAME%\AppData\Local\ArmA 2 OA\ Make a file called BattlEye. (This was copy / paste so no spelling mistake there :s, its really called BattlEye) Paste the BEclient.Dll in BattlEye folder. (WindowsXP) C:\Documents and Settings\%USERNAME%\Local Settings\Application Data\ARMA 2 OA\ Make a file called BattlEye Paste the BEclient.Dll in BattlEye folder. Step 5: right click steam icon and run as administrator. Then you can use the Six Launcher to play the game. There is also a BattleEye folder in the arma2 and arma 2: AO folder in the steam folder. but didnt have to change anything there. As ive stated this has helped 2 ppl besides myself with this problem. So if the problem would still continue after this then dont give me grief please :) Please Bump if this has helped you that way we dont get 5000 posts on the forum stating wht their problem is.