Version D is auto deleted by Norton

Version D is auto deleted by Norton after downloading the installer from your site. Using Norton 360.

That tends to be the case when antivirus software sees a "new" file.  Although it might not have detected any malware in the exe, it's still seen as untrusted for a while.  You can either tell Norton that the file is OK (which is generally a bad idea to override your security software!) or just come back in a few weeks when it's not quite as new any longer and try again.

Tom