I've never seen or heard of that problem on a mac.
Are you attempting to download to your regular hard disk drive or an external drive?
Need to make sure the permissions on your drive are set to your account or with permissions for you to use, else you will get an error.
Make sure there is plenty of disk space on your computer. MacOSX users Virtual Memory so needs plenty of available disk space.
Quote:
Originally Posted by Blackhorse 70V  ... LW reserves space on your disk before beginning the download. Even when you have plenty of empty space, you'll get a disk error if you don't have enough to room to accomodate all of the dl's that you have cued... |
This is always applicable for torrent files. However reserving of disk space for the file is not applicable to all types of files you find on the gnutella network. Not applicable to audio files and programs & some video formats for example.