dyld: Symbol not found: _OBJC_CLASS_$_NSMutableURLRequest 오류

dyld: Symbol not found: _OBJC_CLASS_$_NSMutableURLRequest

  Referenced from: /var/mobile/Applications/App이름.app/App이름

  Expected in: /System/Library/Frameworks/CFNetwork.framework/CFNetwork

 in /var/mobile/Applications/App이름.app/App이름

는 ios8오류로 CFNetwork.framework가 Foundation.framework보다 먼저 컴파일되서 충돌나는 오류이다.

 Build Phases에서 Foundation.framework을  CFNetwork.framework위로 순서를 올려주면 된다.