I think I\'ve found the cause: Document Info window in IB has a warning: \"\'Selected Navigation Controller (Second)\' has nib name property set to \'SecondView.nib\', but t
I believe you are looking for something like this. You would replace "whatever" with the name of you second nib file.
newNavController = [[UINavigationController alloc] initWithNibName:@"whatever" bundle:[NSBundle mainBundle]];