CiviCRM_API3_Exception: "DB Error: no such field" When Editing CiviMail
No such field errors after an upgrade are most commonly caused by not having run the DB upgrader.


For Drupal, visit ?q=civicrm/upgrade&amp;reset=1 or civicrm/upgrade?reset=1
For WordPress, visit wp-admin/admin.php?page=CiviCRM&amp;q=civicrm/upgrade&amp;reset=1
For Joomla, visit /administrator/index.php?option=com_civicrm&amp;task=civicrm/upgrade&amp;reset=1


For full upgrade advice and various troubleshooting tips, refer to the upgrade documentation page for your CMS.