Hp 1/8 Autoloader error

Hi Experts.

I am facing issue with HP 1760 tape library LTO4, it was working fine since two years, now when isert tapes and start the backup process, always i am doing inventory and catalog before the backup process start, this time i got error as below:

 

16.02.15 12:13:02.23  Libctrl task Error - ME: invalid cartridge

     Return status:                   0x80 - command failed

     Global error code:               0x63 - ME: invalid cartridge

     Command code:                    0x15 - unload

     Task originator:                 0x02 - CDB interpreter task

     Extender library specifier:      0x00, 0

     Source element type.:            0x02 - storage slot

     Element number:                  0x05, 5

     Destination element type.:       0x04 - tape drive

     Element number:                  0x01, 1

when restart ultrium , error gone, when scan again start getting error, I tried to replace cartidge with another one , also check other ports in the library , same issue,

Appreciate your Help !

 

Thanks,