When a Scheduled Task fails, it leaves massive data files within the Data directory ( \Exchange Reporter Plus\data) under in a subdirectory named after the Exchange server for which it failed. For us, one job failing for 3 servers caused a total of 10 GB of disk space to be consumed. When I opened a case regarding disk space disappearing, it was mentioned that these files are left behind and that I "could go into these directories and delete these files when a job fails."  This is a 1998 solution. Where is this documented? Does it make good business sense to require your customers to perform maintenance that the product itself should be doing? Most mature products have basic clean-up routines when a job fails. This one should as well.