there are various posts on crashes. some of the fixs have been
de-frag your system, turn off music in options, download version 1.09 patch, turn off all running programs in your backround, un-check the message-pause in message section, put into log, window etc, but not the one that says pause, these are only some of the recommendations that I have seen, they won't completely stop crashes but they do cut down on the number you will have, give some or all of them a try and see if they work for you. I found that turning the music off helped in my games, didn't stop all of it but cut it down.
or you could try un-install and then re-in-stall game. Also ck some of the other posts for problem similiar to yours someone might have had the same problem and found the fix.
good luck
just some ideas mac
