by MTKnife » Sat Feb 22, 2020 6:08 am
Oh, right, I see now you said that, and I also see your specific problem was with materials.
The materials for a given piece of clothing usually go in the same directory as that piece of clothing, though it's possible to put them in a special materials directory that covers all clothes (and there's an equivalent one for other types of assets). Within a clothing directory, materials can be put in a special "material" sub-directory, which makes for a tidier structure, but can cause problems if alternate materials share files (such as normal maps) with the default material.
IIRC, you may run into trouble with some older materials that were uploaded before the assets database recorded which assets they belonged to. There may also still be an issue with materials for built-in assets (some clothes, and things like eyes)--in those cases, the materials get put into a non-functional sub-directory of "data" (I think this is still true?), and you need to move them into the right spots: they go right where the parent assets would be located if they were in the user data hierarchy rather than the built-in hierarchy.