Well, I have tried Open GL on all the settings, and DirectX. I even made sure I had the latest version of DirectX and video drivers. I have found that if I switch around the video settings in between each mission, I might have a chance to play a little longer between crashes, but I still get multiple crashes anyway. I thought maybe it was a case of the antivirus program (a very aggressive Norton AV) running in the background, but I still get crashes after I disable it.
I noticed in the Launcher that when I click on the Registry tab, I get an error message with no display of data. I run my various registry cleaning programs, but this doesn't seem to solve the problem.
I really like the game, though. If there is anyone who can help suggest what to do about my problem, I would really appreciate it.