I am having an odd problem in the hypershade with a PSD Network. For my spider model, if I select it and try to make a PSD network, the attributes are totally empty and so I can't make one. However if I make a simple sphere, make a PSD network applying exactly the same texture that I apply to the spider, set the attributes for each layer group and then apply this network to the spider, it works perfectly fine (the UV map is that of the sphere, but no problem, I just overwrite the UV map with my spider's UV Map.)

Does anyone know why the Attributes aren't showing up when I try PSD network with the spider directly?