"To be clear, the problem was heavily influenced by the constraints of an external tool.
Get PharoLauncher installed in the right location and it works like a dream.
Did you try the proof-of-concept installer I posted previously to the list... 
http://www.mediafire.com/file/3g579bmzqspt8e1/BCPharoLauncher.msi
"

Downloaded it.  Installed it.  Started it.  Selected an image.  Bam.  The app vanished.

Also tried on a brand-new-and-fresh-Windows-10-machine-with-nothing-previously-installed and same thing.

The app doesn't even show in the task manager.

And no error file was created.

If that helps, both machines have Windows in French installed.

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Beno��t St-Jean
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"A standpoint is an intellectual horizon of radius zero".  (A. Einstein)