AVAudioRecorder prepareToRecord Silent Error

I was working on the voice record feature for one of my upcoming iPhone apps, but when I would try to start recording the app would crash.  During the adventure of debugging I couldn't trace anything back to my code as far as memory leaks, uninitialized properties, missing delegate methods, etc.  After about an hour I think I almost as many NSLog entries as I did code.  The two biggest troubling aspects where:
  1. prepareToRecord was the method that was failing
  2. AVAudioRecorder initialization wasn't throwing any errors
I turned to some sample code that I knew worked, but mine would still fail.  At this point I knew it was going to be something little that I was overlooking.  After reading through a few posts on StackOverFlow I noticed a difference in my audio configuration settings that was being passed to: initWithURL:settings:error:

I have a separate class where I set the settings argument.  The last two setting items are for: AVLinearPCMIsBigEndianKey and AVLinearPCMIsFloatKey.  Their values need to be NSNumbers so I was using [NSNumber numberWithBool:], but instead of passing in "YES" or "NO" I was passing in TRUE and FALSE, which is INCORRECT.  Just one of those oversights I forget about when switching from one language to another.

I am still not sure why my NSError wasn't populated with some information.  I don't know why the initializer didn't catch my syntax error either.

After I made my corrections, the recording worked perfectly.  Whew!  Now I just need to write the playback portion.