Thanks! I now installed the µtorrent and it went through this with ease... Don´t now why my NAS didn´t like this special torrent/magnet. The others are running fine...
Anyway! Thanks a lot again for Your help! :)
Sorry. But I can´t bring it to work. My client is reponding "one or more broken links found" and is shutting denclining the torrent. So it´s maybe the client on the NAS...
Thanks anyway for Your effort! You do a great job!