Ratm
Do this and see if it helps, turn off Limewire and shut it down. Restart it but don't connect it to the internet. Goto you Incomplete files and delete it (if it's still there).
Follow me: Click: Start/My Computer/ Local Disk (C) (how it is on my pc)/ Program Files/Limewire/Incomplete/ then delete the file if it is still there!
Hope this helps!!!