HIi Gary - We're getting a 423 error which sounds similar:- Updating user information failed because user email was changed to an address that is already associated with an account. On investigation I found that the users involved did have Turnitin accounts prior to our upgrade to BB8 and had slightly different spelling of their names in the descriptive first name and last name fields in Turnitin and Blackboard. They haven't changed their e-mail address at all, but deleting the old account in one case and changing the name in Bb so they do match don't seem to have worked. I've sent a ticket into Turnitin, but not heard back yet.