Installation:
MANDATORY:
1. Add the following lines to your "Fallout4Custom.ini" file located in "DocumentsMy GamesFallout4":
[Archive]
bInvalidateOlderFiles=1
sResourceDataDirsFinal=
(Note: If you are using Steam, your "Fallout4Custom.ini" might be located under "Steam/steamapps/common/Fallout 4/" as well.
(Do the same thing to all of the files in all the places you can find, just to make sure)
Nexus Mod Manager installation:
After doing the steps above, download the mod using Nexus Mod Manager and install it like any other mod.