Workspace Error

I have just gotten Maya installed and whenever I try to work with the shaders it throws up this error.

Error: Unknown workspace.

I downloaded some shaders and the only way I could figure out how to get them into the hypershade was to use file/import. Am I doing this utterly wrong. I don't mean to sound like an idiot but, can anyone hlep me out with this one? I'm lost.

NM. I just hadn't installed the shader library. It works fine now.