ArrayIndexOutOfBoundsException

[axet]

  at net.sourceforge.javaflacencoder.Subframe_Fixed.encodeSamples (Subframe_Fixed.java:126)
  at net.sourceforge.javaflacencoder.Frame.encodeChannel (Frame.java:448)
  at net.sourceforge.javaflacencoder.Frame.encodeChannels (Frame.java:351)
  at net.sourceforge.javaflacencoder.Frame.encodeSamples (Frame.java:310)
  at net.sourceforge.javaflacencoder.FLACEncoder.encodeRequest (FLACEncoder.java:635)
  at net.sourceforge.javaflacencoder.FLACEncoder.encodeSamples (FLACEncoder.java:603)

Happens rarely, when I close flacOutputStream:

            flacEncoder.encodeSamples(flacEncoder.samplesAvailableToEncode(), true);
            flacOutputStream.close();