Suddenly I got the same problem: Signing Identity:     "-" I rolled back my source code and it was fixed. I think It was not a signing problem. Probably my application was broken.

I saw the same message, but I don't know it is the same problem. I removed "import AVFoundation" from my app, and other linking errors occurred. I fixed these other linking errors, and the error of "framework 'CoreAudioTypes' not found" was gone. It was not the 'CoreAudioTypes' framework problem. I think this error message is misleading.