Anyone using ColorMunki Photo with Retina iMacs?

Also having issues with ColorMunki photo and imac with retina display. Early screen calibrations last Nov were fine but recent ones (following updates to Yosemite 10.10.1 and 10.10.2 have produced dark displays. All is still well on a PC running an HP screen.

I had disabled ADC, and this didn't seem to make any difference but using the slider rather than keyboard is a great idea that I will try in future. What actually has made the biggest difference for me is plugging the ColorMunki into a powered usb hub (found mention of this in a forum somewhere in relation to a macbook). Seems that not all usb ports provide enough power for the Munki.

ADC doesn't work with all monitors with all profiling solutions, so you just have to try it and see if it works. If not, then you always have to remember to turn that check box so you can set the brightness and other settings ADC would normally do manually.

Check the System Preference under Keyboard (Shortcuts tab), and make sure the keys to increase or decrease brightness are off.

A few other things- Use Advanced setting, White Point should be D65 (it was)

They recommend that only because that's the idiotic default of every computer and monitor you buy. It's also the worst default in computer history. D65 (6500K) was based on a northern sky, in the morning, with cloudy conditions. Of course it's blue! But how does daylight color look to you most of the time? It's much warmer, and what we consider to be more of a neutral gray. If you want your monitor to reflect the type of viewing conditions you experience most of the time, use the printing industry default of D50 (5000K), which is considered to be the value for a neutral, balanced gray.

You can also use the keyboard shortcut of Option+Shift+Display Brightness + or - to adjust the display in smaller increments. It's a lot easier than adjusting the slider trying to get it just right. You actually get 64 levels of adjustment instead of 16 on OS X 10.10

I am having the same problem with the colormunki. Once I calibrated the monitor, hit to save the preset and my screen went grey and I don't know how to fix it.

How did you fix it when that happened to you???

Please help because I am working on an important project and assignments for university and I have to use the computer asap!

Thank you look forward to hearing your answer.

Have you tried connecting a separate display? Each display gets its own profile. This would at least get you in a position to reset the profiles so you can use your computer again.