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 has been damaged, possibly by system errors.    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.