BE2012 do not use Tapes -> Please insert overwritable media into the robotic library

Hello,

We have a big problem. We are using Backup Exec 2012 on Windows Server 2008 R2. We have about 5 VM´s and we make a full backup every night on tape.

Now we get this error:

The error translated in englisch:

Event ID 58064: "Backup Exec Alert: Library Insert (Server: "%server%") (Job: "%job name%") Please insert overwritable media into the robotic library using the import command. Overwritable media includes scratch, blank, and recyclable media" is reported in the Event Viewer Application Log.

THE CRAZY THING ABOUT THIS ERROR IS, THAT WE HAVE MANY SCRATCH TAPES IN THE LIBRARY!!!!

Do you have any idea? It is very important for us. Thank you very much for your help