Thought this could be a fun thread.

Idea courtesy of my issue today in which, best I can figure, an outdated copy of Custom Drink Interactions broke my game so as to prevent households from loading (I've been solely building in my custom save file project for a while now, no idea how many patch versions my household loading has been broken for at this point). Finally found the sneaky script mod in my Food folder. Definitely not a first place you'd look for broken mods capable of causing that kind of problem.

All I can say is, at least maintaining a modded copy of Sims 4 is never boring!