Late-game Crash on Saves - No Fix / Error Log (Experimental)

The Trading Knights.Save 326 (Auto).octsav.gz
The Screaming Guddles.Save 166 (Auto).octsav.gz


I have two late-game save files that are unsalvageable from a complete crash.

It is not due to any nobles action, because if you enlist all nobles and have them do nothing both will still crash after a minute or two of being on fast forward play.

There is no crash log and I can't seem to find a way to stop it from happening. 

:(