Cleaned (Onyx) my Mac OS10.10.2, Uninstalled CS5.5, used the Clean Tool, Reinstalled CS5 (Extended). The eyedropper continues to crash (quit unexpectedly) CS5 when dragged outside the application to select a color on the desktop.
In Console Utility a line reads:
1/28/15 10:23:34.110 AM AdobeCrashDaemon: WARNING: The Gestalt selector gestaltSystemVersion is returning 10.9.2 instead of 10.10.2. Use NSProcessInfo's operatingSystemVersion property to get correct system version number.
I can probably include a portion of the 'Crash Report' if desired...but which portion???
I cannot and will not upgrade to CC unless this can be addressed and fixed.