I am implementing FB Login so i Downloaded the SDK from https://developers.facebook.com/docs/ios.
then i drag n down FBSDKCoreKit, FBSDKLoginKit a
FB developers say don't select copy files. Which creates problem. But I did opposite.
I selected copy items if needed. It copied Frameworks in my project. Also automatically Search Path was added by xcode 7.2.
Also double check if there is nothing in Framework Search Pathsunder Search Paths under Build Settings fields, then just add $(PROJECT_DIR) which is equal to /Users/user/Documents/....PROJECT..DIR...
Compiled in 2 projects successfully.