When "Allthefallen" or other Sims 4 mods stop working, it is usually due to game updates that change the core code or automatically disable custom content. Standard Fix for Allthefallen Mods

The short answer is complicated. The long answer involves game patches, website shutdowns, community forks, and a shifting definition of "work."

If you are using the script mods, ensure they are not buried too deep in your Mods folder. CC (Package files): Can be several folders deep.

This is a utility software, not a modification itself. It is designed to sit outside your game and organize your Mods folder.