Every crash occurs when enemy AI is engaged. Successfully navigated mission and all functionality for four hours. However the instant I engaged the enemy the server crashed. I tested this out over several missions with and without NPC's and the result is the same.

Not to belittle this issue, but when wearing your Kevlar AND hearing protection, you don't really hear very well. Then again there's no sound in space and that didn't stop Lucas from using it in Star Wars.