Thanks for the report.
It seems that the Japanese folder or file name, or the Japanese in the configuration file is not being read correctly.
I made this one as a test file, so please try it out.
https://drive.google.com/uc?id=1f2UgOPK5yhMApIWEgAkBX0IgWYKqABUl&export=download
Only the "Skin" and "Wear" folders have English names. In "Skin", only ghosts and skeletons have English file names. Please check if the files are displayed in "Wear" and if the files other than ghosts and skeletons are displayed in "Skin".
If you can solve the problem by just changing the folder name to English, you can do it quickly, but if you need to change the file name as well, it will take time.
