The framework you need is CoreGraphics.

CoreGraphics is a part of the ApplicationServices framework, so you have to add ApplicationServices.framework in order to access CoreGraphics. While there is a private framework named "CoreGraphics.framework" inside of ApplicationServices, adding that will confuse the linker.

Anyways, sorry about the delay oskob, I forgot all about this thread. That's an odd problem -- I'm not sure what's causing that. Is the framework's name in red? Try doing a Get Info on ApplicationServices.framework inside the Xcode project and make sure the path to the framework is set up correctly. You can also try checking the framework search paths in the target settings, but since ApplicationServices is a system-wide framework, I don't think that would be causing it. But it's worth a look.

Are there any more details you could give us?