I have recently upgraded my MacPro from Snow Leopard (though I kept a boot disk for rosetta applications) to OS 10.8.3 to accommodate the forthcoming LR5. Unfortunately, I noticed almost immediately that my soft proof in Lightroom was no longer matching my prints when viewed in my standard 5K GTI viewing setup. I had this working very smoothly with Snow Leopard but it appears that something has changed. I am using an Eizo CG series monitor with an I1Pro 2 spectro and using I1Profiler to make the profiles. My printer is an Epson 4900. I keep my monitor set at low luminance (80 candelas), 5k color temp, and relatively low contrast range (275:1) to mimic paper density range within reason.
Net/net - my soft proofs in Lightroom v4 look great on the screen; the prints look cooler toned and darker in my viewing booth. They used to match before the OS switch. The Espon website shows that my printer driver is supposed to be the same for 10.8.3 as it was for snow leopard. Same for the Eizo calibration software.
My LR printing workflow is pretty standard; LR manages colors, using my profile, in this case I am using relative conversion. No changes to procedure here.
It smells like there is some "unintended" color management/double profiling going on here but I don't know.
Can someone give me some pointers where to explore so that I can narrow down my options to accurately diagnose the situation?
Thanks in advance for any assistance.