I'm not sure what's different now but my AutoHotkey [script].exe is no longer triggering the permissions popup even when running as user and with UAC set to the middle settings with fewer notifications. I even made sure the in-script code that made the tool Run As Admin was disabled.
Weird. I'm guessing that UAC might have gotten 'stuck' in Always Notify, and by trying all the settings I somehow got it 'unstuck' (or something else got it 'unstuck'...I don't really know.) Obviously this not normal so hopefully it was just glitch.
Anyway, it looks like I'm able to use UAC at recommended settings on this computer with both Moho and my script in regular user mode. That's good. It's how it's supposed to work and I really didn't want to require users to mess with those settings.
I'll record the demo video tonight and release the script this weekend.

As always, thanks for your input Wes.