Step 1: Please restart the Job Processor, by opening it up and clicking on "File" then "Exit" (this is the only way to close it properly)
Step 2: Please replace the iTools.Vault.JobHandler.PlugIn.JobPreProcessors.config file on the server with the one attached to this article (below)
It should be stored in a very similar location to:
Click on the Unblock button and then on Apply/OK.
You will now be able to access the downloaded file.