This is the TTW monster mod by senterpat:
I want to play this for the new (real) animals, but other than one time of seeing butterflies I have seen no new fauna other than types of molerats. But more importantly, the game crashes whenever I go into a cell with feral ghouls. I don't see anyone else talking about this problem, in fact I see very little people using the mod. And I don't know what I should do about it other than uninstall it for the time being.
EDIT: Load order included.