Does the tutorial work?
I had similar problem, but tutorial worked, but after tutorial part, when entering the "real" mission I always had/have CTD. No legal solution yet, but I'm interested if you are experiencing same kind CTD as I am.
I know this is going to piss some people, but anyway. I'm sure that my problem is related to DRM. Either because my router settings or the DRM malfunctioning. I'm sure because I didn't have any mods installed and I have very reliable internet connection and I usually know my way with computers
