Hi, I am using After Effects. I updated to Yosemite. Ever since then when I click on the text eye dropper to change the color, After Effects crashes. I am using OS X Yosemite Version 10.10.2 I am on a Mac Pro (Mid 2010). I am using Adobe After Effects CS5.5. I greatly appreciate any help here. Thank you.
That version of After Effects isn't supported on that operating system. See the system requirements.
As Todd says, it's not supported. Be happy it's working at all.
That being said, you can try switching the preferences to use the system color picker instead and see if that fixes the crashes.