Getting this fatal error:
PHP Fatal error: Access level to MB_User_Meta_Box::is_edit_screen() must be public (as in class RW_Meta_Box) in /var/www/csgoresearch.com/htdocs/wp-content/plugins/mb-user-meta/inc/meta-box.php on line 0
Since this is on my dev site anyway, I've changed the is_edit_screen function from protected to public and it seems to work just fine.
(Currently Installed: Settings Page, User Meta, Columns, Group, Updater. All latest versions)