I've also encoutered this problem before. When I was downloading a file (incomplete) I accidentally deleted the .torrent from the explorer. And uTorrent is still downloading & uploading. After that I restarted uTorrent and it didn't showed the torrent anymore. I've checked the sidebar (F7), I've checked "ALL" the categories one by one. But torrent was not showing up, again uTorrent is still downloading & uploading. Then I checked the Logger and this is what I saw.. "Error: <NULL> - Can't open .torrent file: C:\samplefile.torrent" (NOTE: Not the actual filename) What I did was, I downloaded the same .torrent file in the exact same folder with the exact same filename in the error log, which is "C:\samplefile.torrent". I restarted uTorrent, after that the torrent showed up but with an error "Error: samplefile - Invalid download state, try resuming" And so I restarted it then the file was back to normal. I just hope this helps. Nice