Halo Errors

Wow I'm getting angry at Halo. As you know, I love to mod Halo for PC. But today I keep getting exceptions (aka. the game will crash and won't tell me why) at loading spots. I can't seem to figure out what is wrong. Maybe the save data and the map don't agree or maybe I'm pumping too much ammo out and overflowing an int somewhere. I don't know. It is really frustrating me. Oh and happy Easter.