Most likely they failed in premium mode for some reason and then JD tried to download them without account.
Create an
account usage rule and disable free download, then try again - it will either work or you will get another errormessage.
Also:
Please post
your log-ID here
If your bugreport is about a specific website which JD supports via plugin, please also provide example URLs which can be used to reproduce the issue you are having.
Bitte poste
deine Log-ID hier.
Falls dein gemeldetes Problem ein Problem mit einer Webseite ist, die per Plugin unterstützt wird, stelle bitte zusätzlich Testlinks zur Verfügung, mit denen sich dein Problem nachstellen lässt.
-psp-