The download session has expired
The download countdown has completed but the session is no longer valid. This could have happened for a few reasons.
- You're trying to download something while there's already another countdown active. Please wait for the first countdown to be ready before activating the next one.
- The error can sometimes also show up if you have cookies disabled in your browser. In that case please activate cookies and try again (after logging out and in again, if you were logged in when trying at first).
If that still doesn't make the error go away, please also try with a different browser.