Two things wrong there (and possibly three)
1. You really need to reinstall the game, anywhere except C:\Program Files (86x) (anything in there is protected against you making changes)
2. Everything in the Kamiryn's override folder has to be in the Neverwinter Nights\override folder (not the folder, just the files in it.) ie merged.
3. For the purpose of testing the mod, temporarily remove all the haks from your HAK folder & try the mod in the OC.
One of the haks may change the standard crafting system.