Ok, aside from what may be some responses to a few crashes that I was not able to replicate, it looks like I'm caught up on severe issues enough to start working on the next savegame breaking fix, a restructuring of the way the NPC split is handled that will hopefully play into some EXE assumptions a little easier and thus naturally debug a number of issues we're having.
Assuming this works, the next task thereafter would be to try and hunt down exactly which SVN version caused our unit combat graphic crashes to start happening and determining from that what we did wrong and fixing it.
So I plan to start on that next weekend. This gives a little time for the players who reported those earlier crashes to give me the rundown of their main panel options and bug options - if those are still crashing for them then this is the only way I may be able to find out why since I've run them through the debugger without issue already.
And maybe before I start work on the issue I might try to resolve the crash on the modmod but I generally have a personal rule against downloading modmods, even for debugging purposes. (It's a dangerous precedent that can lead to accidental commits and is EXTREMELY time consuming!)