Dinger, can you tell us what kind of setup you have in your league/universe? There have been some settings that conflict with eachother in the past and had to be addressed. You could go one better and...
Upload your league's .dat files and give us a step by step on how to achieve the same crashes. Utilizing your game file and your steps, Markus could find the issue and fix it a lot faster than us trying to figure out how to help.