Sorry to hear that you are having problem downloading. I am not getting it why is it from a particular user. Do you have personal conflict with Dream!! just kidding. Please do the followings :
1. Log out from BT
2. Clear your browser's cookies
3. Delete the temporary torrent files from C:\Program Files\BitComet\Torrents
4. Log in back again in BT
5. Download the that torrent again from that thread.

If it does not work then please try different client. You can try utorrent. Let us know how it goes.

Anonno