Hi Phil,

> That's what I'd expect. Why is the MOI file containing 12
> points and in duplicate?

It's like Candide wrote above - turn on the "Weld vertices along edges" option in MoI and then you will get an 8 vertex cube with shared vertices between the faces.

That's exactly what the weld option in MoI controls - whether to generate shared points where surfaces meet, or whether to have individual points for each surface but that are stacked up on the same location in space.

If you enable weld then you should be able to create an 8 vertex cube that will have the problem shown above when rendered in Octane.

- Michael