CiviCRM 4.7.6 and Drupal 7.43. I created a CiviEvent and enabled online registration. I can access the registration page when logged in as the administrator but anonymous users get this error message:
The requested Profile (gid=12) is disabled OR it is not configured to be used for 'Profile' listings in its Settings.
Drupal permissions for anonymous include CiviCRM: profile listings and forms, CiviCRM: profile view, CiviCRM: access all custom data, CiviCRM: view all activities, CiviEvent: register for events, CiviEvent: view event info.