FYI - Our Off-Shore IT department just installed Symantec Endpoint Protection 14.2.4815.1101 over night, and it's blocking / deleting several of our DF19.1 executable programs because it fails some "Heuristic SONAR" testing. The only remedy I can find is to upload the file as a false positive, but that results in hours of frustration trying to get access back to the file that AV has locked out. As soon as I re-compile, the new file is blocked. When I stopped the AV process, it restarted itself.

I'm honestly convinced some of these Anti-Virus systems are Viruses themselves.