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Oooh - good catch, Mike on the stacked vertices. In the script I only weld exact matches and I probably forgot to force those points to 0,0,0, resulting in them not being welded. Any tiny deviation from 0 results in those points moving during the "revolve" operation, resulting in duplicated points.

Thanks.
Actually, if it works OK in Poser, I'd say don't change it. I welded them on my own to see how it would look, and as expected, 32 triangles sharing a common center point looks terrible in SubD. There should be other ways of avoiding any render artifacts in other programs.