title: AVFoundation iOS 5
body: <p>My apps runing on the appstore are <strong>using mp3 and video files that don't work since iOS5 update</strong>.</p>
  
  <p>I've installed <strong>xcode 4.2</strong> and...
  When I test in the <strong>iPhone 5 Simulator</strong> or <strong>device I get the following error</strong> (for audio or video files):  </p>
  
  <pre><code>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: /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
  in /System/Library/Frameworks/Security.framework/Versions/A/Security
  </code></pre>
  
  <p>When I try this in the <strong>iPhone 4.3 simulator</strong> or <strong>device it does not crash</strong> ..</p>
  
  <p>I've cleaned and re import the frameworks involved but it seems to be that kind of error</p>
  
  <p>Note: My apps don't use any security.</p>
  
  <p>Could you help?</p>