Okay. A few weeks back I finished mah big mod based on a random idea, based on "what if this game was to be played DF-style".
So there's like 30 civ's and 200+ creatures that I whipped up to inhabit the world. Initial tests showed promising results, no sudden crashes and so on.
Longer tests however did suddenly start crashing for no apparent reason.
Of course, there's nothing in the error logs. I regenned a test world last night and will start a new fort to do my testing today in case it was something that I noticed during earlier testing and "fixed" but actually required a regen that I obviously didn't do until now.
So what are the things that could possibly cause a game to have a sudden crash with no warning or reason? The civ's use gear straight from vanilla DF, although I made up a big list of about 100+ artifact-only weapons that can be made by moods, there's a bunch of normal creatures, scaled ones or those with skin that turns to leather, but after a long trial of messing about I was able to make critters "close enough" to undeads, that don't have skin or fat on their bodies, just bones and all the rest.
If I'm lucky it was just a screwup because of a lack of regen, if I'm unlucky, then I'm stumped. Which isn't that hard when you have a crapload of creatures and one or some of them are causing issues.
The creatures work like they should in arena testing though.