With some trackers i have problem using "Torrent URL" as well.
But if i download .torrent to my Pc and use Choose/Add file i never had problem. Did you try it that way?
Do you have the problem with all trackers?

Originally Posted by droopy64

Hi Guys,
I have problem with uploading torrent files with ruTOrrent GUI.
Permissions to /var/www/rutorrent are set to: 755 www-data:www-data
I can put torrent file using magnetlink, watchdir or directly by rtorrent.
Any suggestions what should I check to fix this problem?
I have "Failed to add torrent." any time :/