Hi,
I have a family of seven in my game, each time I try to play them, the games crashes after a few seconds of live mode.
I tried playing with a different family, and it worked fine.
I tried removing the family and downloading it from my library again, also tried moving it to a different lot, but nothing works
what can cause this? my game is modded but I don't see it affecting any other families...

I had this problem, and it turned out if was a piece of clothing (some jeans surprisingly) that wasn't working properly in game. Best to try with out any mods at all (so a clean game), and if they work then, try without just clothing (if you have some), and if they work, that's the problem, after that, it's trying to figure out which bit is causing the crash.

Of course, it may not be clothing, but that is the biggest problem from what I've seen so far

Just wanted to update. found the problematic download.
It's this amazing hairstyle which I really adore
http://linna.modthesims.info/download.php?t=534491
wish I could use it in my game, hopefully it'll get fixed soon!