Export/Import tools between Blender and the Nif format, using Bodyslide/Outfit Studio's Nifly layer. Supports Skyrim LE, Skyrim SE, Fallout 4, Fallout New Vegas, Fallout 76, and Fallout 3.
Turns out they changed the way "Separate/Combine RGB" nodes work and merged RGB and HSV into single node with dropdown selector for the type and if you have one of the new nodes in your mesh material PyNifly has a stroke and Blender freezes and needs to be killed with Task Manager.
Blender 3.3 does still support the old RGB nodes but they can only be created through Python, not by the user, so unless you import an existing nif to get PyNifly to generate them and copy-paste them into whatever material you need, you're stuck using the Combine Color merged node. Which means you need to delete those nodes before exporting or bad things happen.
Example bug report (from some other I/O Blender plugin on GitHub): https://github.com/KhronosGroup/glTF-Blender-IO/issues/1651
Turns out they changed the way "Separate/Combine RGB" nodes work and merged RGB and HSV into single node with dropdown selector for the type and if you have one of the new nodes in your mesh material PyNifly has a stroke and Blender freezes and needs to be killed with Task Manager.
Blender 3.3 does still support the old RGB nodes but they can only be created through Python, not by the user, so unless you import an existing nif to get PyNifly to generate them and copy-paste them into whatever material you need, you're stuck using the Combine Color merged node. Which means you need to delete those nodes before exporting or bad things happen.