Bingo. I wasn't aware that v1.0d was a thing (I skimmed over the title), as I thought the main page was updated (it says v1.0a is the latest version).
Thank you.
When I activate the mod and load a new game, I get an error message in the console:
SCRIPT ERROR: GDScript::reload: Parse Error: Expected indented block after 'if'
At: res://files/scripts/newsexststem.gd:328
ERROR: reload: Method/Function Failed, returning: ERR_PARSE_ERROR
At modules/gdscript/gdscript.cpp:580
I'd imagine I somehow fucked up somewhere in installing it, but I'm not sure where.
EDIT: Nevermind, sorry. It appears to be a problem with my game, not this mod in particular.
Nope, it's because of this mod (or my failure to properly install it, I have no clue).