Random user map error - I need help.

[Lightingbird]

I'm lost and need help.

I am getting this error again. Its been awhile since I got it last.

the requested operation can not be performed on a file with a user-mapped section open

I am on windows 7, using Comodo firewall, using utorrent ver 2.0.4, and this is happening only with one file I'm trying to download.

I have tried deleting the torrent and starting over. I also tried to force recheck it with no luck. I can download other torrents with no problems.

Any ideas?