Ultimate Branding Error - Admin Bar

When you activate Ultimate Branding > Admin Bar and Save Settings, here is the error I received:

Warning: array_diff(): Argument #1 is not an array in /home/sitename/public_html/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/custom-admin-bar-files/inc/UB_Admin_Bar.php on line 223

Warning: Cannot modify header information - headers already sent by (output started at /home/sitename/public_html/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/custom-admin-bar-files/inc/UB_Admin_Bar.php:223) in /home/sitename/public_html/wp-includes/pluggable.php on line 1121

Please advised.