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AVAudioRecorder throws errors

I use AVAudioRecorder to record, it worked fine on iOS 4 devices, but yesterday we found out recording is broken on iOS5. Using the iPhone 5 simulator I got following error:

2011-08-02 11:09:03.586 Moodle[7832:10103] 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

Do you know where this error came from and how to fix this?

This error is just console noise from a System framework, you should ignore it, it doesn't affect you. If your app is crashing or failing to record the real reason is elsewhere.

AVAudioRecorder works just fine on iOS 5, even if it does throw (and catch) Exceptions during normal operations which make debugging harder.

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