Alright so I'm having an issue with activating/installing certain mods while I can can still activate others. Whenever I try to activate them, I look for the "Mod Activation Queue" tab on the bottom of NMM and under where it says status, it says "a problem occurred during install."
Mods that fail to activate include:
Snap 'N Build
Harley Quinn Outfit CBBE
Crafting Fury 9000 GTX