As of right now my favourite is www.torrentspy.com but i havent seem much and torrent spy is somewhat limited in the lines of not as hugely popular banRAB........anyone know of any good sites?
i actually use a client called torrentopia, and you have like half a dosen search engines integrated in it....best ones if you don't want to get the client are mininova and isohunt...
i think we'll need a bit more info than that....maybe you just downloaded a corrupt file....or maybe you were fiddling with the file before it actually downloaded ( which to my knowledge is a big no no with torrent files), maybe the file includes a crack that you haven't activated and so on and so on....