How is everything with you, I picked interest on you after going through your short profile and deemed it necessary to write you immediately. I have something very vital to disclose to you, but I found it difficult to express myself here, since it's a public site.Could you please get back to me on:( firstname.lastname@example.org ) for the full details.
Renderplus is running all of the AccuRender platforms now. McNeel still has Flamingo which is the Rhino plugin. Shouldn't be much confusion anymore. These guys are very customer oriented so they should be able to help. If you don't get a satisfactory answer let me know-- I'll talk to them.
I can't really do anything about the ADT/ACA approach to materials. It's Autodesk that makes this difficult, not me.
The bottom of this page explains how to assign nXt materials to ACA (ADT) components. If it's still not working create a forum post and we'll deal with it. Lots of people have made this method work successfully.