You may see the following error in the Windows Task Scheduler, or in various places in SyncBackFree/SE/Pro which 'drill down' to the Scheduler.
"0x8004130F (or 8004130F): No account information could be found in the Task Scheduler security database for the task indicated"
which means that your Windows Task Scheduler is generating an error (and not running SyncBackFree/SE/Pro when it should). The error is a Windows error in the Task Scheduler and not in our software