This is very odd... With the aircraft disabled, the map runs fine - but with any aircraft (I've tried every possible combination) it will inevitably CTD sooner or later (usually sooner). But it looks like I'm the only one experiencing this issue.
I've tried reverting to the 1.2 AI minimod files (after disabling the train) and have tried removing my modified AI strategy files for the map, but still get a CTD every time.
What's even weirder is that none of the aircraft cause any CTD problems on other maps. I tried disabling all the AA guns instead of the aircraft, in case one of these was the actual cause of the crash, but no luck.
Looks like I'll just have to wait and see if the updated Mount Olympus works OK for me!
I also spotted the stuck bots in the Monastery ladder room, and there appears to be another upstairs spawn point, in a room accessed by stairs, where bots get stuck; this may just be a pathfinding/navmesh issue, as they should be able to use the stairs.
BTW, please don't take all these error reports as criticism - you've done some amazing work in getting these maps working so well in SP. (Many of the "official" maps have just as many bugs and/or CTD issues)