Debug.err
Crash zip file
I was selecting an army that was standing around the world map.
The only other insight I can offer is that on the previous turn I gave this army orders to move a good distance across the world. I noticed that the path was taking it through a blocked square (blocked by one of my cities with too few empty spaces to allow an army to traverse it, reported here as buggy path behavior previously). Hit end turn, noticed that the army had not moved. I was going to select the army and give it shorter movement orders (to the near side of the problem city). Upon selecting the army, the game hung for a few seconds and then crashed. It's existing path was never drawn before it crashed (the green dots). That's what made me think it was a path issue.