I don't know what is going on here...
I got two of the computers fired up, tried The Void, and it worked.
I tried the Galaxy Forge map we were originally trying, and it crashed without even doing the mini-dump on my computer, but the second computer loaded it fine.
I loaded the map in single player on my computer and it worked.
I tried some other maps of all three types (Galaxy Forge, Map Designer, and Default maps). They worked.
I looked at the map in Galaxy Forge again to see if somehow I had some hangers spawning or something that would cause the bug mentioned above, but didn't see anything.
Sooo I got the third computer going and tried that Galaxy Forge map and it worked...
I re-enabled the E4X mod and it worked...
So ya, I don't know what happened, it's like loading a different map reset something?
Let me know if you want me to do some more testing. I have had LAN games get to a certain point and crash, even when re-loaded. If that happens again I'll send a report (assuming I get a memory dump...)