Problem with one material

I am working on this fun model and am starting to texture and render it.

I am having on-going trouble with one material  (See pic below)

Normals are in the right direction and the "eye window" on the other side of the ship renders fine.

I pulled the component out and it renders OK by itself...??

Any ideas?  I am trying not to explode the model too much but it is nested several layers deep.

PS  Loving all the new features!!!