Quote - These are the last few lines showing in the exporter when I try to run my new scene:

  File "C:Program FilesSmith MicroPoser Pro 2010RuntimePythonluxmaticmatcore.py", line 503, in emitLux
    print >>s, 'Texture "%s" "%s" "%s"' % (name, vtype, self.LuxType)
AttributeError: 'Color_Round' object has no attribute 'LuxType'

Is that sufficient info? I don't know what else ...

I can't figure out where it's getting Color_Round from to begin with. It's not a default Vicky, but I'm working from a modified VSS shader.

Well, you can assume it doesn't understand how to translate the Poser material nodes it finds in your scene.
Since Poser has an advanced, but proprietary material system, you can expect the alpha exporter to choke on anything but the simplest (P4 level) materials. This is a problem ideed, but hopefully one which will be fixed, eventually.

Or, to put it in simple words: Don't try to transfer advanced Poser materials, they won't work.