id summary reporter owner description type status priority milestone component resolution keywords cc parents 5453 migration will fail when disable a previously enabled plugin 宋文武 "steps: Enable mediagoblin.media_types.blog. Run gmg dbupdate, OK. Disable mediagoblin.media_types.blog. Run gmg dbupdate, FAIL. with Traceback: KeyError: '562bc42a8fff'... alembic.util.CommandError: Can't locate revision identified by '562bc42a8fff'... After search, it's same as: https://stackoverflow.com/questions/32311366/alembic-util-command-error-cant-find-identifier If I delete '562bc42a8fff' from the alembic_version table manually, it will works." defect closed major programming duplicate