Le message affiché par jigdo est le suivant :
Aaargh - 1 files could not be downloaded. This should not happen! Depending on the problem, ti may help to retry downloading the missing files.
Also, you could try changing to another Debain or Non-US server, in case the one you used is out of sync.
However, if all the files downloaded without errors and you still get this message, it means thaht the files changed on the server, so the image cannot be generated.
As a last resort, you could try to complete the CD iamge download by fetching the remaining data with rsync.
Press Return to retry downloading the missing files.
Press Ctrl-C to abort. (If you re-run jigdo-lite later, it will resume from here, the download is not lost if you press Ctrl-C now.)