It's just like the title says. I added 3.53 as a theme, switched to it, imported the settings from 3.49, and made a few minor changes (new menus), but when I'm logged in, the page seems to be visible, but when I log out, all there is is a white screen.
Weird.
I'm back on 3.49 right now, of course.
Any thoughts?
threeguysonebook.com, wordpress 3.01