I'm using Blender 2.71.
After adding armatures to my model I cannot unwrap or show a uv map. I've done it before on a different model and with the same one. But now I cannot unwrap it at all and the texture won't even show. When selecting all in edit mode the option to unwrap is greyed out.
I was following this tutorial to add armatures if this helps: https://www.youtube.com/watch?v=PPbSGUPj72w