After upgrading to v4 of the WPMU Dev Dashboard, the screen is full of notices about undefined offsets at lines 1211 and 1223 of wp-content/plugins/wpmudev-updates/includes/class-wpmudev-dashboard-ui.php.
Mostly the offset that is being looked for is 498 and 489.
Currently using the WPMU Dev Dashboard in a multisite environment and is network enabled.
Seems our customer data (acquired via $data = WPMUDEV_Dashboard::$api->get_membership_data(); on line 1194) doesn't include the right keys.
(marketing and buddypress)
I've updated the code to correct this and attached via Gist - https://gist.github.com/BinaryKitten/de5c3e22e34b0cf30852