A rather embarrassing topic but if I don't ask I'll never figure it out... Categorized Favorites Menu doesn't work for me. The game doesn't seem to recognise that it's installed at all. I don't know why as everything appears to be as it should. Does CFM have to be opened with special keystrokes? Ctrl-F, Ctrl-mousewheel do nothing on the vanilla favourites menu. I tried using Oni Edition and Archer Alchemist config files as well to no avail.

File paths are: Data\SKSE\Plugins\CFM_extensions.dll
Data\Interface\favoritesmenu.swf
Data\Interface\favoritesmenu.cfg
Data\Interface\favoritesmenu_equipsets.cfg

SKSE is installed and works properly. "getskseversion" returns: SKSE version: 1.6.6 release idx 34 runtime 08970000 . I have SkyUI 3.1 and all other SKSE mods appear as they should.