The custom sort order specified contains one or more invalid
column names: reporter%2Cbug_status%2Cpriority%2Cassigned_to%2Cbug_id.
They have been removed from the sort list.
When experimenting with unstable code - even if it has been neatly packaged by your distributor - it is always prudent to have good backups and an even better sense of humor. -- Jon Corbet ...
