I am using 12.5, however the 12.0 version also has the update and I should have noted that in my last post. (http://seer.entsupport.symantec.com/docs/316390.htm )
I had this problem as well last week and I uninstalled the hp device, then I downloaded the latest device driver intsaller( http://seer.entsupport.symantec.com/docs/326586.htm ) and after a reboot of the server and the ArcVault 24 I was finally able ...