Load Custom Texture not working

[MasterKillua]

Try to change the Texture Cache level to Safer.
If you are using a PAL version, then textures should be XXXXPXX (Example, GZLP01_d44e5d4d_8), and if you are using the NTSC version, the textures should be XXXEXX (Example, GZLE01_d44e5d4d_8).