5.6 Upgrade Error in /concrete/core/models/permission/cache.php1 user found helpful
Everything works fine but when accessing the site it'll show some of the theme styles but display an error and no content (and no concrete toolbar)
The error is:
Fatal error: Call to undefined method Area::getPermissionObjectIdentifier() in /home/gcm/public_html/concrete/core/models/permission/cache.php on line 8
I can access the new 5.6 dash fine and if I place the site under maintenance mode that page displays appropriately.
In the meantime I just went back to using 5.5 until I can move forward with 5.6.