All good answers above. Poser is trying to tell you that there are problems with the shader. Any time you see dotted lines connecting nodes (only ever in SF) that means you can't do that because reasons. Additionally, even more helpfully, up in the top right hand corner, between the Announcements and the library icons, the messages speech balloon is yellow, almost certainly with the messages telling you about not connecting Blinn to Alternate Diffuse, etc.

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