The custom sort order specified contains one or more invalid column names: op_sys%2Cbug_status%2Cpriority%2Cassigned_to%2Cbug_id. They have been removed from the sort list.
Fri May 29 2015 07:59:40 EDT
This is bug 193 reporting

Zarro Boogs found.
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File a new bug in the "tail_n_mail" product