Hi. I tested with many type of textures and all were imported. Maybe the files used by you dont has the correct format.. EX: transparent textures need saved with DXT5.
Please, send me your textures with problem: mysummercarbr@gmail.com
followed the instructions you gave, still isn't working. putting the textures in the correct asset folders and im running the texture tool. Still no textures lol
Please, send me your textures with problem: mysummercarbr@gmail.com