Need help with Dtunes?

I am trying to download torrents through Dtunes, Once the file is downloaded it is in browse folder and once i go there and tap the file the Dtunes closes and as per the directions i open Mobile terminal and type the command ./gettorrent but it says "No such file or directory" I know it says once you Tap the torrent Dtunes is supposed to say Prepared but in my case it is shutting down...Can any one please help me in this ....