There's also a simple test file available here: CylinderOctaneTest.zip

That's a cylinder surface that is split into some slices. But the vertex normals on it come from the true cylinder NURBS surface, so creases or seams between the slices should not be apparent if those good normals are being used.

For example in Cinema4D importing the OBJ file from the zip file linked to above renders like this:



- Michael