OK firstly i feel for you loosing that quantity of movies, i really do, its one of my worst nightmares (i saw your other post), i hope you get it back.   Good find on that link to github issue, yes i think the reason you have fallen foul of this is two fold:-   1. You deleted the file using your mac and then also did a deletion of the torrent and data through the rutorrent web ui, obviously because you have already deleted the file manually it couldn't find anything that matc