Error messages that verifying the Tapes Label

Hi guys,

I have a problem with our system, the system show many error message, this is the error:

cancellation: none;
             completion code: ;
               error message: "verify label in progress on \\\\.\\Tape2147483646",
                              "verify label in progress on \\\\.\\Tape2147483646",
                              "verify label in progress on \\\\.\\Tape2147483646",
                              Jukebox `HP@4.0.1' failed to load the requested volume.,
                              Jukebox `HP@4.0.1' failed to load the requested volume.;
                 last update: 1301718035;
                    messages: ;
                        name: HP@4.0.1;
          operation instance: 3258;
            operation source: nsrd jb op;
                    progress: retryable;
             prompt response: ;
                      prompt: ;
                  start time: 1301718028;
                      status: retryable

Please the attached snapshot:

Networker 7.4.4 , HP 8096 bakcup Library

Many thanks