Android: Leaked IntentReceiver exception is being thrown even though I call unregisterReceiver.

Question

I don't understand why I'm getting this exception when hitting the back button. I have the IntentReceiver registered in the onCreate method and it is supposed to be unregistered in the onPause method. My Log.w() call inside of the onPause method leads me to believe that the unregisterReceiver() method is being called, but I am getting this exception still.

Any thoughts?

private PlayerReceiver playerReceiver;

public void onCreate(Bundle savedInstanceState) {
 ...
     IntentFilter playerFilter;     
     playerReceiver = new PlayerReceiver();
     playerFilter = new IntentFilter(PlayerService.BUFFERING_FAILURE);
     playerFilter.addAction(PlayerService.BUFFERING_SUCCESS);
     registerReceiver(playerReceiver, playerFilter);
 ...
}

protected void onPause() {
 ...
     if (playerReceiver != null){
         unregisterReceiver(playerReceiver);
         Log.w(TAG, "playerReceiver has been unregistered");
         playerReceiver = null;
     }
 ...
}

public class PlayerReceiver extends BroadcastReceiver {

    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(PlayerService.BUFFERING_FAILURE)){
            setListenButton(false);
        }
        closePlayDialog();
    }
}

LogCat Output

08-26 11:44:28.646: WARN/WWOZMain(1058): playerReceiver has been unregistered

08-26 11:44:29.476: ERROR/ActivityThread(1058): Activity org.wwoz.WWOZMain has leaked IntentReceiver org.wwoz.WWOZMain$PlayerReceiver@43e4dd60 that was originally registered here. Are you missing a call to unregisterReceiver()?

08-26 11:44:29.476: ERROR/ActivityThread(1058): android.app.IntentReceiverLeaked: Activity org.wwoz.WWOZMain has leaked IntentReceiver org.wwoz.WWOZMain$PlayerReceiver@43e4dd60 that was originally registered here. Are you missing a call to unregisterReceiver()?