Thank you Leo, I figured it out. Interesting install: install the plugin and the theme becomes visible in Appearance > Themes where you can search for it and install it. Frankly, I quickly forgot all about the issue as I discovered how to activate ALL of the backend customization options via Appearance > GeneratePress. I quickly got lost in the wonderfulness – it’s very, very much a replacement for Woothemes Canvas, only a lot better because it uses the Customizer (and does it very well), and the options are tightly organized and closely and sensibly arranged. Bravo!