I've got the same issue. It's more of a lockup/not responding than a crash, so I have to go into Task Manager and end the program.
From what I can tell it only happens when attacking or being attacked by units in the Scarred/Diseased wild land. The other wild lands seem to work fine.
It happens whenever a wild land unit attacks or is attacked, and auto resolve or manual resolution is selected.
Fortunately the monsters haven't wondered outside of the wild land so the game is still playable, with a big "no go" zone.