Edit: The cause was proper mod, but the important part comes here, since I suppose many of you use it; the PROPER mod BIKI page said that it's not recommended to use the mod in multiplayer unless EVERY client has the mod running.
Yesterday when we were playing I didn't get an option to get out of a car. I was able to to play by signing a key for "get out". This was the first time I've played ARMA with 64 bit windows and this was a fresh reinstall of the game and addons.
I believe it has something to do with the addons used in the missions (I'm pointing at CBA and ProperAddons). This is what my shortcut looked like on sunday:
"D:\Program Files\Bohemia Interactive\Arma II CO\arma2OA.exe" -nosplash -mod=@CBA;FDFmod;@GTDGrass;@JSRS1.4;@MK4Hud;@Proper;@Thirsk;@WinterCamo;
And sorry Variable, it was Anguis who looked at my addons from a server log or something?! (could have been the ofp times!). And yeah, this happened in every mission We played.
Former "Bubba"