In the last 20 minutes, I've finally captured one of the major annoying causes of crashes. The problem is related to a player connecting and being booted by the anticheat. Each time this player connects, he crashes the server.
This particular situation happened 4 times about 20 minutes ago.
I think the particular bug is fixed. We will have to wait and see. In any case I have much better logging now and so we should be able to fix these things much more quickly in the future.
EDIT: I failed. I thought a change I made would fix it. It didn't.
Proud member of "the most paranoid group of people in the community"