I have created custom fields for a site. All of them work except those connected to Participants. When data is entered into the backend, data will not save, and no error is issued. The fields also won't show up to be added to profiles.
I have upgraded from 4.5.8 to 4.6.2, had no effect. Also I rebuilt the database schema and the problem persists. There is no custom code. The site is using Drupal 6 on CiviHosting. I have tested it on the demo site and on other civicrm installs.
Is there anything else worth trying or worth looking into?