Actually, I'm going back to doing it manually, for this purpose.

Syntax: PolyFaceNormals( polylist, vertexlist)

Syntax: PolyVertexNormals( polynormlist, vertpolylist)

VertexPolys() - DEPRECATED: see VertexNgons(), below

Syntax: VertexPolys( polylist, numVerts)

Essentially, the approach is already deprecated, as it relies on a deprecated function....

No biggie.  Just making a note of it.  :D

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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.