I GENUINELY appreciate your time, attention ...and most especially your help.

When the button is clicked, it displays a stub, as shown:


However, as you suggest, once I moved "Shortcuts.menu.htm" from...
..\AppData\Roaming\Moi\ui\customui\
to
..\AppData\Roaming\Moi\customui\
it started working as expected !!!

Moi must be the greatest software in the world and a primary reason is how we, the user base, are treated and treat each other on this forum.
Thank you mightily !!!