Success! Thanks to everyone involved in this issue. I now have access to to Zero Gravity presets for PadShop Pro
+100 to the Cubase community, especially psmarios. -100 to Steinberg support for not responding to my ticket
I followed your advice to reinstall Cubase 9 using the “for all users” option, ran the Cubase update, and then did the same for PadShop Pro update and the Zero Gravity soundset.
Steinberg should make this installation prerequisite (that Cubase and PadShop Pro be installed for “all users”) clear. Or, ideally, they should re-engineer the installer code so that the presets are available regardless of the ‘only me’ / ‘all users’ selection.
Thanks again community 