I have downloaded a metal node setup from Chocofur.com and when I open their blend file, I can access all their nodes. However when I try to copy paste them into my file, it does not work. How can I get their node setup to mine?
One way is to assign the material to an object (i.e. the default cube), then save the origin file, open the new file and choose "file - append - choose the chocofur file, object (not "mesh"), cube: the cube will be imported with all its attributes, with its material node tree.
Another is select all the nodes, Ctrl G make group, rename the group, save, open the new file and append the node group.