To check the list of files and folders currently in the \storage\ folder, we can check to see which are valid and discard anything that isn't:
1) Edit the file "C:\Program Files\Quest\IT Security Search\storage\ReporterFiles.config"
2) Look for a key that looks like the following:
<config itsearch_total_count_value="90000" itsearch_isdamaged="False" path="C:\Program Files\Quest\IT Security Search\storage \ReporterFiles_20180606081632825" .../>
3) Take note of the folder name
4) Stop the ITSS service
5) Delete all other folders in the \Storage\ folder (not the files in the base \Storage\ folder, just the folders not listed in that config file)
6) Restart the ITSS service