Dataprotector 9.04 : "Backup device unavailable. Trying to promote any pending mirror to original"

Hi,

The library load the first tape free and immediallly unload the tape.  There are more free tape. I don't understand why we get this error. I copy here the messages of the copy:

[Normal] From: BSM@svrdp.phmj.es ""  Time: 02/10/2015 9:43:22
    Backup session 2015/10/02-4 started.

[Normal] From: BSM@svrdp.phmj.es ""  Time: 02/10/2015 9:43:22
    The session "2015/10/01-26" will be restarted.

[Warning] From: BSM@svrdp.phmj.es "XSM012036 - FS FULL i INC"  Time: 02/10/2015 9:43:22
[61:11018]     Could not find related full backup of the object
    xsm012036.phmj.es:/C named "C:".
    Backup mode is changed to full.

[Warning] From: BMA@xsm012036.phmj.es "VD1_XSM012036"  Time: 02/10/2015 9:43:25
[90:11]      Unrecognized option "-operation" => ignored

[Warning] From: BMA@xsm012036.phmj.es "VD1_XSM012036"  Time: 02/10/2015 9:43:25
[90:11]      Unrecognized option "2" => ignored

[Normal] From: BMA@xsm012036.phmj.es "VD1_XSM012036"  Time: 02/10/2015 9:43:25
    STARTING Media Agent "VD1_XSM012036"

[Normal] From: BMA@xsm012036.phmj.es "VD1_XSM012036"  Time: 02/10/2015 9:43:26
    Loading medium from slot p:\jukebox\file044 to device VD1_XSM012036

[Normal] From: BMA@xsm012036.phmj.es "VD1_XSM012036"  Time: 02/10/2015 9:43:26
    Unloading medium to slot p:\jukebox\file044 from device VD1_XSM012036

[Normal] From: BMA@xsm012036.phmj.es "VD1_XSM012036"  Time: 02/10/2015 9:43:26
    ABORTED Media Agent "VD1_XSM012036"

[Major] From: BSM@svrdp.phmj.es "XSM012036 - FS FULL i INC"  Time: 02/10/2015 9:43:27
    Backup device unavailable. Trying to promote any pending mirror to original.

[Critical] From: BSM@svrdp.phmj.es "XSM012036 - FS FULL i INC"  Time: 02/10/2015 9:44:04
    None of the Disk Agents completed successfully.
    Session has failed.

[Normal] From: BSM@svrdp.phmj.es "XSM012036 - FS FULL i INC"  Time: 02/10/2015 9:44:04

    Backup Statistics:
          
        Session Queuing Time (hours)         0,00        
        -------------------------------------------      
        Completed Disk Agents ........          0          
        Failed Disk Agents ...........          1          
        Aborted Disk Agents ..........          0          
        -------------------------------------------      
        Disk Agents Total  ...........          1          
        ===========================================      
        Completed Media Agents .......          0          
        Failed Media Agents ..........          1          
        Aborted Media Agents .........          0          
        -------------------------------------------      
        Media Agents Total  ..........          1          
        ===========================================      
        Mbytes Total .................       0 MB        
        Used Media Total .............          0          
        Disk Agent Errors Total ......          0   

Thanks,

David