I see this has been a problem before but finding it difficult to find a solution that helps.
I was patching the game when it crashed my computer.
On restarting it has since kept telling me Error 31: a hog returned an error while trying to read.
I have tried de installing and re installing the game and I still get the same problem. I have tried ticking the force verify box in options and it doesn't work. I have gone into the Cryptic studios folder on my computer and it was misteriously empty even though the game was installed.
Well I finally managed to fix this issue. Now of course when I press engage the load screen appears and then promptly crashes. Some crash dialogue box appears for me to fill in which disappears before I can even read it.
Cryptic you have really outdone yourself at bringing a game to the masses that a lot of people are having trouble even accessing.