When I try to launch, about 75% of the time I just get a black screen and have to wait a bit, then re-launch it. When I finally do get it to work, whenever I click on a mission (ex. when I click on the level Nacht Der Untoten in singleplayer) my game always freezes. I haven't been able to get into a game yet, even though it says this game is gold rated for crossover.
I have tried almost everything, reinstalling the game multiple times, clearing cache, changing language, installing patches.
One thing that is weird is that whenever I install and DirectX is getting installed, it says it encountered an error and doesn't install correctly I don't think, but the game itself finishes installing anyways. So the problem might lie with the DirectX install, which I have also tried to fix but to no avail.