If you’re interested there’s a thread where @Symmetric helped me to import a large number of placeable models into NwN. It’s what got me started on the simple modelling that I have done. TBH, you can probably skip my very first post in that thread. Anyway, you’ll need the version of NeverBlender that matches the version of Blender that you have. Assuming you have the latest version of Blender, you’ll need Neverblender 4.0. The thread I am referring to is Blender: Is Someone Willing to Help?. Hope that helps.
TR