Xcode 5 upgrade - Now nsobject.h has errors duplicate interface definition for class 'NSObject'

Question

I upgraded to X-Code 5 last night. Now when I\'ve gone to continue development on one of my iOS apps (which compiled fine on the previous Xcode version) I\'ve hit an error I don

Answer 1

verify that you do not have any old frameworks referenced in you Framework Search Paths under Build Settings. Remove those being old and update outdated locations.

Added a screenie for help.