May I ask, how you got the nif file to export from Nifskope? I installed the latest versions of Nifskope (2.0 Pre-alpha 6) and Blender 2.79. I can import nif files fine into NIfskope but when I export as *.obj, it won't import into Blender. I am a total noobie at modeling, and was just happy to get Blender running with pyffi.