I found a fix to the problem. This drawing had 3d solids exported from Revit and 3d blocks imported from Autocad 2012 which were from a previous Nxt rendering. Opening the materials browser in Autocad 2013 and deleting the Accurender:white material then purging the drawing resolved the issue.
I will check out your drawing when I get a chance. This is likely a known issue which has to do with AutoCAD versioning. It may be important to have nXt loaded when passing nXt data around.
"Since there is no Ambient Occlusion Slot in 'Texture Set' Mode of the nXt-Material Editor,
I found another way around what to do with AO Maps:
Baking it into Diffuse; e.g. Multiplying AO Map over Diffuse/Albedo/Colour in…"
"The wooden texture of the TV-Console looks quite decent.
The Wallpaper on the left has an interesting structure, maybe it would look even better, if you make the texture seamless + applying a little bit of depth, e. g. with highpass - filter in PS?"
"Thank you for help on this topic!
Will test 'Automesher LT' (developed by Automapki), if I run into troubles again.
[Sometimes I was wondering about, if this forum is still alive... .]"
"Good day,
I searched the former forum posts and found another option to solve this problem which is another plugin to autocad-----AUTOMAPKI. You can give it a try."