Hi there, I just have the same problem now.
When I install "CM1312series-win7-full-solution-AM-AMEA1-v5.1" lastest driver coz the printer suddenly down. Then error about "SUI-OPTIN" still show on my deatail report by "HP Installation Error - Vista" after I following that to change the Startup.
My Error Situation Code : 06919255
Log files: 06919255.zip