I don't know who's briliant idea it was to make GOG Galaxy... but it's made modding impossible for me. I can't seem to get ANY mods working on this version of the game and NMM out right refuses to detect the game files (I've tried it through the x64 and it says the EXE doesn't exist when I can see it clear as day...) and I've tried the recommendations from Nexus for going through the main game files and that still dosen't work. Is there ANYTHING you guys can do to fix this issue becasue I would love to add mods to my game.

Here's my advice:
1. Install Mods manually
2. Or use Witcher 3 Mod Manager, NMM is awful
3. NMM needs the main Witcher folder, not the bin or x64