title: MPMoviePlayer error loading file
body: <p>I am trying to use the MPMoviePlayer to play a simple movie and I keep getting this error in the console(but the movie is played): 
  My xcode version is 4.3.1.</p>
  
  <pre><code>2012-03-24 14:51:49.488 european_culture[450:17a07] Error loading /System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/AudioIPCPlugIn:  dlopen(/System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/AudioIPCPlugIn, 262): Symbol not found: ___CFObjCIsCollectable
  Referenced from: /System/Library/Frameworks/Security.framework/Versions/A/Security
  Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
  in /System/Library/Frameworks/Security.framework/Versions/A/Security
  2012-03-24 14:51:49.496 european_culture[450:17a07] Error loading /System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/AudioIPCPlugIn:  dlopen(/System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/AudioIPCPlugIn, 262): Symbol not found: ___CFObjCIsCollectable
  Referenced from: /System/Library/Frameworks/Security.framework/Versions/A/Security
  Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
  in /System/Library/Frameworks/Security.framework/Versions/A/Security
  2012-03-24 14:51:49.584 european_culture[450:17a07] Error loading /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn:  dlopen(/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn, 262): Symbol not found: ___CFObjCIsCollectable
  Referenced from: /System/Library/Frameworks/Security.framework/Versions/A/Security
  Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
  in /System/Library/Frameworks/Security.framework/Versions/A/Security
  2012-03-24 14:51:49.592 european_culture[450:17a07] Error loading /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn:  dlopen(/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn, 262): Symbol not found: ___CFObjCIsCollectable
  Referenced from: /System/Library/Frameworks/Security.framework/Versions/A/Security
  Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
  in /System/Library/Frameworks/Security.framework/Versions/A/Security
  2012-03-24 14:51:49.610 european_culture[450:17a07] Error loading /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn:  dlopen(/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn, 262): Symbol not found: ___CFObjCIsCollectable
  Referenced from: /System/Library/Frameworks/Security.framework/Versions/A/Security
  Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
  in /System/Library/Frameworks/Security.framework/Versions/A/Security
  2012-03-24 14:51:49.617 european_culture[450:17a07] Error loading /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn:  dlopen(/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn, 262): Symbol not found: ___CFObjCIsCollectable
  Referenced from: /System/Library/Frameworks/Security.framework/Versions/A/Security
  Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
  in /System/Library/Frameworks/Security.framework/Versions/A/Security
  2012-03-24 14:51:51.749 european_culture[450:13a03] Unbalanced calls to begin/end appearance transitions for &lt;MPMoviePlayerViewController: 0x935f500&gt;.
  2012-03-24 14:51:51.930 european_culture[450:15303] AQMixerDevice::SetMixerChannelLayout(0x7d47f50): scope 1, element 1, layout: tag=0x640001: error -10851
  </code></pre>
  
  <p>But I tested it on my iPad(5.1) and the message was different.(The movie is played, too.)</p>
  
  <pre><code>Unbalanced calls to begin/end appearance transitions for &lt;MPMoviePlayerViewController: 0xf6a0c40&gt;.
  </code></pre>
  
  <p>What's the problem? 
  Here is my code that should play a movie when my button is pressed:</p>
  
  <pre><code>-(void)playMovie:(NSString *)fileName   
  {
  NSString *movieFile = [[NSBundle mainBundle] pathForResource:fileName ofType:@"mov"];
  NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:movieFile];
  MPMoviePlayerViewController *tempMoviePlayer = [[MPMoviePlayerViewController alloc] initWithContentURL:fileURL];
  MPMoviePlayerController *moviePlayer = [tempMoviePlayer moviePlayer];
  
  [tempMoviePlayer.view setFrame:CGRectMake(0, 0, 1024, 768)];
  [_zoomImageView addSubview: tempMoviePlayer.view];
  [self presentMoviePlayerViewControllerAnimated:tempMoviePlayer]; 
  [self setWantsFullScreenLayout:YES]; 
  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playMovieFinished:) name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer];
  [moviePlayer play];
  
  [fileURL release];
  [tempMoviePlayer release];
  }
  </code></pre>
  
  <p>plz, help me.<br>
  thanks a lot.</p>