If anyone else receives the message I reported above and can't download the SR, the solution seems to be to paste the URL into the address bar.  Apparently the e-mail link can't be relied upon to work for everyone, for some reason.

If anyone else has trouble logging in to Smith Micro support, the problem may be login ID case sensitivity.  I set up my account as Cagedrei@email, used it that way for a few years with support, and receive all signs from the log in page that I should try to use Cagedrei@email as my ID.  Yet the actual login entry field requires cagedrei@email, without the capitalization.  So, y'know.  If you can't log in, mebbe assume that the site has worked some kind of jiggery-pokery with the capitalization in your ID.

One expects bugs and frustrating weirdness from Poser itself.  To get the same from SM support is... I won't say what it is.  :cursing:

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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.