Exactly what it said, whenever I try to do such things the buttons don't show up

I think this is due to various Tweaks image mods. They have not been updated since before the paperdoll system was impemented. Although you cantry to sort your mods in the main menu Mod tab,  click the Ok button, close the Mod window, Quit the game and restart. This will slove the issue if you have one of the Tweaks image mods installed.