I encountered this issue yesterday, and spent the whole day trying to fix it, let me explain the issue, I have been making devkit materials, and when I place them down, (the ones I made) are simply just placing down as a solid black colour, I have re-checked my material settings in unity, I rechecked my .asset files and I also have my paths correct, if I don’t, I’m going to link screenshots below of everything, so I can get some extra people to recheck, thanks.