SAM-2644, an admin should always be able to edit a published assessment. On the nightly servers, the admin account can not edit a published assessment after submissions are made. It looks like the edit option doesn't even come up. For instructors the edit comes up but they are prevented from editing.
May or may not be related.
WARN [http-apr-24888-exec-13] org.sakaiproject.content.tool.ResourcesAction.readAllResources IdUnusedException
org.sakaiproject.exception.IdUnusedException id: /user/admin/