Compile error in building AVFoundation.framework in Xcode 4.5

Question

I've upgraded XCode 4.5 today and built my project. A compile-error shows:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk/System/Library/Frameworks/AVFoundation.framework/Headers/AVAudioMix.h:15:9:
'MediaToolbox/MTAudioProcessingTap.h' file not found

The error occurs even I add MediaToolbox in my Project Settings-> Build Phase.

The strange truth is I create a new project and just import the AVFoundation.framework. It works.

Here's my environment:

Mac OS X version: 10.7.4 
Xcode Version: 4.5 (4G182) 
gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
GNU gdb 6.3.50-20050815 (Apple version gdb-1822) (Sun Aug  5 03:00:42 UTC 2012)

I've tried XCode 4.5 giving me "SenTestingKit/SenTestKit.h" file not found, but works on 4.4.1 but it didn't work.

Answer 1

I've built successfully after I filled Targets->Build Settings->Search Paths->Framework Search Paths $(inherited) only or made it clean.

Answer 2

Try deleting both frameworks, then adding them both back, the MediateToolbox first.