I just installed X on a fresh wordpress install. Any attempt to edit pages just shows the cornerstone logo, but won't load any elements.
Things I've tried:
Checked that X and Cornerstone are both up to date. They are.
Disable ALL other plugins.
Tried multiple browsers.
Disabled virus protection on my PC.
Still can't edit any pages. The customizer and other X components seem to work fine. Demo content loaded fine as well.