What the Hell are you talking about? I didn't do anything to Main. Actually, I'm online right now. I can open the log file fine. You sure you weren't dreaming? ...

Yup, difficult to be sure but it looks like the problem stems from having guests in your apt (here C and O in C's apt). Obviously there is more to it than just that as that's been happening regularly for years without constant crashes. I'm not 100% on the details right now, but the good (?) news is that this looks to be something that won't happen on trunk because I fixed/changed the way maps are saved a year or so ago. The less good news is that that fix is extensive and involved and still unfinished (partly because it interacts with another equally extensive and involved and unfinished fix/change I began [the way the server sends item packets to the client]).

Whenever I finish these fixes/changes and update main such crashes should be no more.