Example project crash on start up

Hi, I am trying to build the example project “iPhoneGuiExample”. It crashes while starting up the app at:
UIApplicationMain(0, nil, nil, [NSString stringWithUTF8String:appDelegateClassName.c_str()]);

How can I fix this issue? Is it a bug on Openframeworks side?

A screen shot is attached below, any advices would be very appreciated!

have you modified / renamed any files ?

So the link you shared helped my case! Just delete MyGuiView.xib and add it back to the project. Clean the whole project and build again fixed the crash.