What does "torrent not valid bencoding" mean?

ive bin using utorrent for a while now and have never encountered this error before .. the source of the file valid as there has been many people downloading.(about 2000 downloads) from kickasstorrents... so i assume its not the file problem... please help .. thanks
Update: yeah .. it was the browser problem.. i was using googlechrome .. reinstalled it then the problem dissapeared....
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