Problems using Apple Display Calibrator Assistant

Hi all,

I recently purchased a Dell U2410 and when I hooked it up to my MacBook Pro I noticed it had a yellow / peach-like hue to the whites whereas my MacBook Pro had a "cooler" blueish hue. In attempting to calibrate both I used the Apple Display Calibrator Assistant (in expert mode) on the Dell and Laptop screens. The two were still wildly mis-matched and so I tried callibrating the laptop again but this time when I try to adjust the hue on the apple logo (expert mode) it goes dramatically off-color to the point where I can only return it to the correct color by exiting the program entirely.

Anyone have any ideas what might be causing this / how I can get it working again?

thanks

 

monitor callibration problems

My second display does read "Dell U2410". The real problem I'm facing now is that ever since I callibrated the U2410 I can no longer properly calibrate my Macbook. Any ideas?