FoxHound you are not approaching this the right way. Apparently there are some deep and serious issues and bugs in your code, do NOT try to circumvent the crash temporarily by moving things around and such. This is not helpful, it's a waste of time and even when the game does not crash on your machine then anymore it may still crash on other computers.

One more thing I can think of is faulty files like textures, levels (wmb) and such, maybe even a sky cube. I've once had seemingly random crashes in a multiplayer skateboarding prototype and with the help of jcl I could trace it down to a damaged wmb file which would overwrite memory or such on level loading.