title: SIGABRT error during interface change
body: <pre><code>(IBAction)switchAppointment {
  
      AppointmentController *appt = [[AppointmentController alloc] initWithNibName:nil bundle:nil];
  
      appt.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
  
      [self presentModalViewController:appt animated:YES];
  
      [appt release];
  } 
  </code></pre>
  
  <p>That is the code that I use to switch from one .xib to another, however on the line that says "self presentModalViewController:appt animated:YES" , I'm getting a SIGABRT error. My app crashes immediately when I try to go into that interface. </p>
  
  <p>FYI too I'm on Xcode 4.2, but it was doing this before I downloaded the beta.</p>