I'm still running Revo2.3.3 and prepare to upgrade to latest version.
I have upgraded all my extras (Babel, TinyMCE etc).
I changed PHP version from PHP5.5 to PHP5.6 - without logging out of Manager first.
Now ALL my resource pages appear to be empty. Under "Settings" the "Parent Directory" is empty.
Reverting to PHP5.5 didn't help.
Clicking "View" however is still showing the page properly.
I'm desperate for hints about what might be broken.