Steam build id: 10131126
The save was also generated on this version.
Windbg says "access violation - code c0000005" (which I believe means buffer overflow or memory corruption in windows? Not sure though).
The crash happens every time, seemingly at the same moment; I was not able to pinpoint the exact event which triggers it though (the fortress has 200+ citizens so it's quite difficult).
I can reproduce it if needed; I can also run with debug symbols if it's possible/required.