First I'd like to give credit, as I'm not the first to put this on the forum by mytrix.

https://forums.sinsofasolarempire.com/176162/page/4/  (I tried to install the update that links me and it won't saying that it's already installed).

Well I have Vista 64x Ultimate SP2, and for some reason with SP1 and SP2 my computer would frequently minidump out of custom maps with my friends.  I have all my settings maxed out, and I have 8 gigabytes of ram.  I did some searching and found /LargeAddressAware allows programs to go beyond a 2gb virtual memory block.  I've set the linker for some of my games I was having issues with and so far all of them haven't crashed since making the change.

I found this website which has a link to the debugger CFF Explorer and instructions on how to change the /LargeAddressAware linker.

http://www.jaloonz.com/2008/04/enabling-large-address-aware-for-games.html

I hope this helps others, as so far it's helped myself and my step brother get back in the game.  So far (4 hrs), crash free.