I can confirm a reproducible crash on OS X with this mod specifically, since the latest update to the game.

Hard crash on bad pointer, to desktop, immediately upon entering the turn-based UI on any mission. Possible this is like the last vanilla update, when there was a period of mismatch between Feral's release and the mods.

If any of the authors see this post: please let me know how I can help. Happy to put some legwork in.