It seems that there is a correlation betweeen the Automatic Shutdown and Automatic file and folder verification.  

Reflect is aborting backups at 99%.  The Macrium Reflect automatic shutdown feature has been enabled. 

There is definitely a pattern in the logs that shows that Reflect is aborting the backup and I've seen it for myself.

While working at the PC Macrium reflect was performing a backup and the automatic shutdown dialog box appeared.  I selected to postpone for one hour.  About 10 or 15 minutes later the backup completed successfully. 

All backups where the computer was unattended during the automatic shutdown were aborted at 99%.