The user interface (UI) and dialog box windows in Photoshop, Camera Raw, and Bridge have a black background. It doesn't correctly display black text on a light background.
The dialog boxes include, but are not limited to:
Disable or uninstall any application that cleans up your hard drive. Then, perform a repair install of your Mac OS X operating system to reinstall missing OS files.
Applications and utilities that clean up your hard disk can delete system or application files.
Disable or uninstall any third-party cleaner applications to prevent future deletion of required system files.