Quote - Hi Cage,  Oh and belated Happy Birthday greetings ;-)

Yes I can understand that. So if a vertex was a corner of a dozen polygons, such as maybe the centre of a circle made of twelve segments, and for some reason the UV  mapping separated those dozen polygons onto different areas of the map, then that one vertex would have a dozen different but equally valid UV coordinates.

That is an interesting problem. I wish I was better at maths, and programming. I find puzzles like this fascinating.

Thank you! 

You've got it!  It's a real puzzler.  I'm not sure it's something which can be solved algorithmically.  It may be something that requires user intervention to resolve the ambiguity.  If PoserPython gave us access to mouse interaction with the 3D Preview and allowed selection of vertices or lines, maybe something could be created in PPy to help resolve the matter.  I tried to write a native Python UV editor to help sort out the seam edge mess, but the editor was slow, even with Spanki's tdmt.pyd in use.  So it looks like this is beyond PoserPython, at least.  Maybe Blender, with full Python access to the 3D view and geometry, could pull it off.  (I'm on about Blender again.  :lol:  I have this love-hate thing with the program.)

I'm not really a whiz with math, myself.  Spanki seemed to be one, to me.  That he couldn't solve the problem really helped convince me that it's a biggie.

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.