I upgraded to unstable server 2.5.6. The upgrade initially failed with the error "Duplicate column name 'motion_algorithm'". However, uninstalling bluecherry and then installing fresh did succeed (though it wiped my event database). After reconfiguring the server, my users can watch live view. Unfortunately, the server is not recording any footage nor events in the database. There are no relevant errors in the logs. This was working fine with the previous version. I am unable to downgrade to an older version without uninstalling and wiping the database again first.