Having trouble porting RTB's ISM2 3DSMax import script to Blender (Python 3)

[Rmartin691]

HyperDimension / MegaDimension / SuperDimension Neptunia
I have updated my Blender Add-On.

• Imports characters, accessories, weapons, processor units, and level maps.
  
• Supports texture maps (diffuse, specular, emission, and normal).
  
• Vertex coloring also works.
  
• Alpha blending is easily enabled.
  

https://github.com/LilacDogoo/blender_neptools

i followed what it says for your too extract files convert files but im confused on cl3 files on what to do exactly with them cause i cant convert them