Idk if Im understanding this properly, but the way i read it is that youre giving each object its own unigue 2048??? Is everything unique or are the textures tiling?
idk why I'm getting this erro on the normal map, in the seams :/ used substance designer with Tri Planar projection and normal combine with the bake from sculpting it
Try http://www.melscripting.com/forums/index.php?s=a0ffea1da3a0a7a4ea9ad56f865c0b43&act=idx This is the place i go when i got trouble with a MEL. hope this helps