Avatar the last airbender BMS script

Hi, I was hoping someone could help me with the last part of the BMS script from .50 files (mesh files) to .3ds files. 
a quick video tutorial or maybe a step by step list because there are no instructions on the owner of the script website, https://ps23dformat.wikispaces.com/Avata...+Airbender
I figured out the extracting the .PAK/RCB, and etc but when i get the last script to convert from the mesh file to .3ds it either says

 - you must choose the name of the other file to load in the same folder
- open input file C:\Users\Kim\Desktop\Avatar\Avatar Model\mesh.3ds

- error in src\file.c line 256: fdnum_open()
Error: No such file or directory

Last script line before the error or that produced the error:
1 open FDSE ? 1


Or something about -w option 


The scripts are for the very first Avatar the last air bender video game on ps2. Any help would be VERY appreciated, Please and thank you