Hi Rich, Michael is right in his description of the situation with Maxwell. With exports in triangulated OBJ format everything must be OK, but working with this in Cinema is horribly (selecting, unwrapping, etc.).
I use n-gons mesh and triangulate it just before hitting render button. The trick is in triangulation without breaking vertex normals. For this I take a few steps:

1. Select imported polygon object(s)

2. Functions > Remove N-gons

3. Select all points

4. Structure > Connect

5. Render Scene

> I also tried a standard OBJ import but that gave me shading errors.

Hm, I have worked well in Cinema 4d R11.532. Of course, "Import normals" checkbox must be set.


Regards
L_AN