Testing upgrading from v1.3.5 to v1.4.0 on my dev server I ran into the following error whenever editing a user after upgrade. The field 'activity_visible' was not recognised. Just opening a user for editing (either via admin panel or /index.php?account/preferences) and saving without changing anything pops up the error. The upgrade went through without issues, and no errors are logged in the server error log. Ideas?