I came around a weird 'bugg'. When I only have my map mod in my mod folder, I have missing textures (of custom buildings, the normal buildings work fine). When I put THE SAME ART FOLDER, that is in my mods folder, in my levels folder in the map with the same level name (user/documents/BeamNG/levels/Sloped_City (name of map)) the textures apear again. Anyone knows how to fix it?
I don't know if you copied the material.cs which comes with it but you may need to change path if they are relative (begin with a ./ ) if it's not relative (begin with art, level or vehicle) you may check that you don't overlap files