title: iPhone zXing QR Scanner - didscanresult function never fires
body: <p>I have loaded the zXing project into my own project.
  It loads fine, the zXing scanner pops up after a button call. </p>
  
  <p>I can dismiss the view controller on thezxingControllerDidCancel but when I scan a QR code, no codes are ever recognised and therefore the didScanResult function never fires.</p>
  
  <p>Does anyone have any idea about this one?</p>
  
  <p>The didScanResult function is below. </p>
  
  <pre><code>-(void)zxingController:(ZXingWidgetController *)controller didScanResult:(NSString *)result{
  resultLabel.text = result;
  NSLog(@"did scan!!!");
  [self dismissModalViewControllerAnimated:NO];
  </code></pre>
  
  <p>}</p>
  
  <p>Note: I'm not sure if this is relevant, but when the scanner comes up, I get this logged by the app: "wait_fences: failed to receive reply: 10004003"</p>