Ah.  No, that's wrong, about the feetDistance.  It has nothing to do with actor geometries, which again makes sense.  It's the X offset of the Origin of the left foot.  Getting posed Origin positions is not as simple a coding task.  :crying:  But the approximation through use of the source figure's feetDistance seems to work decently.

It looks like some problems in an animation crop up when the special settings of the Walk Designer are used.  The "Align head to..." options and the settings for stride length, arm swing, head bob, etc.  The "Align to" settings caused the neck geometry to explode in animation, for a few frames.  The other settings worsen any animation I've tested so far, but with less disastrous results.

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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.