I'm not totally familiar with smartdens script cos mine is different but I think the trouble is Curve.002 - put this on another ( inactive) layer to check that - it has no faces or material.. You may also need to name the mesh something other than 'Curve' - not sure about that one :? you might also...

Hi

Indigo 1.0.9_2 won't render.
ERROR: object has no attribute 'faces'
I have no idea what to do with object named faces, changing / deleting material doesn't work.
Object "faces" is multible Bezier Curves converted to faces & connected with faces to eachother.