Hi Michael,

regarding export settings...

it could be find on Octane forum two different ways for exporting mesh from MoI. Here https://render.otoy.com/forum/viewtopic.php?f=21&t=1135 (after downloading tutorial) it could be seen settings with "quads and triangles" with unchecked "weld vertices along edges" (dated Apr 2010), here https://render.otoy.com/forum/viewtopic.php?f=9&t=637 it can be find recommendation to use only triangles + unchecked "weld vertices along edges" (dated Mar 2010)

Both advice's are a bit "out of date" from early stage of Octane.

Do you think, that quad and triangles settings would be better choice?

Thanks.
Mik