I have a Colormunki Display and am trying to calibrate both an iMac and a MacBook pro and am having the same issue with both. The problem started a few months ago and i thought maybe the device was on its way out so i bought a new one, first use seemed fine but ever since i am having no end of issue, It is making both screen super orange and saturated and i keep reverting back to a previous calibration that matches my prints. I have been through the set up so many times, I am sure all my settings are right, curtains drawn, fully connected to screen and same problem every time, just keeps making it warmer and warmer. I am starting to think it is the software. Has anyone else complained of this issue?