I don't know if this is related, but yesterday I upgraded to the latest release and I could no longer backup or restore from my Windows share on my Synology NAS. I found an older version (6.3.0.276), installed it and my backups and restores started working again. The error I got with the new version that went away when I installed the older version was: “a specified logon session does not exist. it may already have been terminated”