Internal SCSI Error Test ab

[Alpha Guys]

Hi,
I am testing the Ultrium 460 external, I am testing with HP StorageWorks Library 4.5SR1. I can update firmware and showing to me drive information too. but when i click on the test (read/write test) , it is stop and showing to me "internal SCSI error-test aborted. LTTScript: Script aborted (error: Panic:sv_sepvn called with negative strlen at C:\program....../common/scsicmd.pm line 73)
how can I fix that error?
and I test with in the other tests like Device analysis.. also same errors.
Thanks in advance.
Kevin