Have you re-started Poser since you first encountered the error message?  Poser may have thrown a rod, in which case re-starting it might help.

Have any of the scripts you tested worked in the past without an error?

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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.