EXPLANATION This message should occur only on a down-level computer. Any action to correct the problem should be performed ...

EXPLANATION    This message should occur only on a down-level computer. Any action to correct the problem should be performed on that computer.  The schedule file is damaged.    ACTION    Restore the schedule file, SCHED.LOG, from a backup copy, or delete the file and create a new one with the AT utility. SCHED.LOG is in the LANMAN\LOGS directory.