Just a note to all of SP guys out here: it's recommended to delete all previously manually installed maps and whatever other addons you may have and get a clear 2.56 install before reporting any issues. Some of the weirdest crashes reported on our Discrod usually come either from your files being corrupted during installation or conflicted with your other files.
Apart from that, all Normandy maps with Bren Carrier will crash your game, that issue is known, it will be fixed in upcoming hoftfix, or you can fix it yourself using a fix posted in this topic before. There is no point in reporting it all over again.