Why can't i download torrents anymore?

[niftynamething]

I used torrents all the time for album discographies last week. Now i try to download something and it won't even open, it'll say they dunno what to do with it and if i want to choose a program to download it with. uTorrent isnt even on the list of programs they're suggesting, so i browse for it and they dont even let me use it.
I tried using bittorrent but i got the same thing.
What the hell is wrong!