This may be difficult to describe. When I load a scene (my current one only has 3 materials) one of the live materials is connected to the mesh node, but the other is not. So, things look great when I'm setting up the textures, but when I test render a frame from the export script one of my materials is white. The node is still there, it just doesn't automatically connect it.
Is this an exporter issue or an octane issue?
Has anyone else had this problem?