I'm setting up MW 1.28.2 and trying to get VE to work. However, it keeps getting me back to the old editor. This is from the log:
Illegal offset type in isset or empty in /var/www/extensions/VisualEditor/VisualEditor.hooks.php on line 20
Not sure if it has anything to do with this, but I did actually set $wgVisualEditorAvailableNamespaces and included NS_MAIN in it but still!