MacBook Pro Early 2011. OS OS X 10.8.2 (12C60). 8GB RAM. 120GB SSD + 500GB 7200RMP HDD. Acer H233H External Monitor via Thunderbolt to HDMI @ 1080p. Hello guys, I have an Acer H233H external monitor. I found a professionally calibrated color profile for it via Digital Versus (found here http://goo.gl/PkXC7) It's spot on and makes my screen look much much better. I started having an issue: When I turned on my mac; the PW prompt screen was a certain hue, then once I logged in; it changed to the color profile. It was very annoying. I read that a solution was to delete: SSD/Users/Op/Library/ColorSync I had placed the Acer H233H color profile in this location. I copied the profile and deleted the folder. I am left with: SSD/System/Library/ColorSync I tried placing the Acer Color profile in that location but something is broken. Here's my current issue: My external monitor can see the profile via the Display Settings. But it will not change to any of them. (Even the one specifically made for it) When I try to calibrate any of the profiles it says: Can't calibrate the Display:The Factory profile for the display could not be found. Running the ColorSync Utility: Profile First Aid: Repair and Verify yields no errors. ColorSync Utility --> Profiles --> Users is Empty. Any help fixing this would be great. I should have moved it instead of deleting it out right. I'm an idiot.