http://www.staredit.net/index.php?showtopic=35134&hl=This was the other post he had earlier where no one had no clue what was happening. Basically, people aren't crashing, but are getting disconnected from each other in the course of playing this map.
The theory I am going to say everyone (including myself) will say is rediculous/stupid, since the game lags to make up for connection not being fast enough. But, if the game somehow didn't lag enough, it could possibly be that so much is occuring on a map that the game simply decides to disconnect with the other players since it is behind on sending the information between the players.
I know that makes no sense and probably isn't the answer, but his last post really didn't get any attention... kedama, I can't say I've ever seen a problem where specific maps cause people to lag out, and I think a lot of people here can second me on that.
EDIT: Oh, and I would play it to see if anyone dropped, but I can't stand SIMS games, sorry.