[fa65344] Crash when moving around in lab

Hey, I’m back with another crash report! I went diving into a lab in version fa65344 and when descending to the second level down it crashes when moving around. It seems related to something that happens on the floor, as it doesn’t crash when moving in the same direction nor at the same amount of moves. Perhaps it’s related to the new enemy infighting system?

Version 538ff6b does NOT crash when moving around on the same floor. Like last time, I’m providing a savegame that crashes readily when moving around the floor. Just load it up and start exploring the floor, it’ll crash sooner or later.
https://drive.google.com/file/d/0B3AL9f2YbVzhX1hPZzZ1NjFPeW8/view?usp=sharing