Whenever I boot up the game, it will play the intro scenes for the game, and will not load the main menu. It doesn't crash because it still makes menu noises. I just can't see it, nor hear the music.
Did you change any settings? Specifically, I recall changing something in the 'cartographer' menu that caused my game to crash. You can either re-install the game or revert the settings in the configuration files. Make sure you're not running any mods/fixes either.