Invalid command operation code with discjuggler

Hi, i have an autoloader with 6 drives (plextor 522452a) and one died. This model is discontinued and i tried to replace it with an old drive (HP 8200) that i still have. everything is working well BUT i have this message when the machine load a black disc “17808 invalid command operation code”

Like i said, everythind is well burned (grade A with our CLOVER system) so any idea with the error message? I can still find some plextor premium and i can live with this message but i prefer to understand why…

Thanks