Recently we have lost somes image and thumbnails files during a data migration back in July 2014. Unfortunately our archive unit could only retrieve back up data dating back to September 2014.  I attaching screen shots of the current errors (Error [833] and Error [6390]) that I am receiving and the path where they should be located. We have recently upgraded to Laserfiche RIO 9.2 with workflows and forms in January 2015.

My question is how can I identify any currently missing image and thumbnail files in my current setup?