I can't seem to create a rectangle layer on any object originating from the vertex modeling room. It works fine on primitives added from the assembly room however. I thought maybe it had something to do with uvs but I tried every possible combination of uv mapping and still no results. Adding shading domains didn't help. I even converted the primitive to a vertex object in the vertex room and it received the rectangle layer just fine. 

Any ideas? Is this a bug or operator error? I'm hoping for operator error actually. 

One other thing: while in the shader room, if I switched the preview to "Sphere" (instead of the actual vertex object), I could then draw and manipulate a rectangle on the sphere. If I switched back to the vertex object view, the rectangle would be there but was not resizeable or moveable. 

Any help appreciated 

John