protected void fireServerExceptionEvent(ExceptionEvent evt) {
    if (serverExceptionListenerList != null) {
      Object[] listeners = serverExceptionListenerList.getListenerList();
      for (int i=0; i<listeners.length; i+=2) {
        if (listeners[i]==IExceptionListener.class) {
          ((IExceptionListener)listeners[i+1]).OnExceptionEvent(evt);
        }
      }
    }
  }