If those two and other similar page demos are meant to be available in effect as templates for further work, then something went wrong during installation. I could try deleting the theme files and I suppose the plugins as well, the re-installing, though I wonder if there might not be a more efficient and likely effective way to proceed.

I’ve taken the site out of Maintenance mode for the moment. You’ll see, if you return to it, that the submenus under “Elements” are all completely empty, and under Pages are all empty except for under Portfolio. All of the submenu items under Blog and Shop are are empty labels – [siteurl]#

I’ll note that when I try re-importing and activating the Base Version, the routine runs for just a few seconds and jumps to 100%. When I run the Set Up Version routine, the import moves gradually from 1 to 15% or so, then jumps to 100%. I get a similar pattern and results regardless of the demo theme I choose. The Cosmetics theme is the one we expect to start with.