Unknown nodes (help)

[christiangonzalezdes]

I imported and Irex rig which i downloaded from gumroad, and the textures are not showing. When I open hipershade its sais unknow, (you can see it on the linked image) and I dont know how to fix or make the  appear. Im new in maya, need help pls

[damaggio · Accepted solution]

Those are old Mia materials , just assign new Arnold shaders to the mesh parts and reconnect the texture maps that are missing