If you get an error, and only some users are upgraded, try refreshing the page to upgrade remaining users.
Fatal error: Call to a member function getUsername() on a non-object in /usr/local/www/apache22/data/vesak49/gallery/classes/gallery/UserDB.php on line 328
Warning: Unknown: open(/tmp/sesstmp/sess_2aa3c8ea5c838a4876dd920428a89ccd, O_RDWR) failed: No such file or directory (2) in Unknown on line 0
Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp/sesstmp) in Unknown on line 0