title: GWT RPC method call fails without error message
body: <p>In GWT application I have RPC interface. Some methods works fine (i.e. <code>RemoeServiceServlet</code> configured fine), but when I try to invoke another method, it always fails with <code>onFailure()</code> method. Ajax call also don't occur (I can see it using FireBug, also on server side method invocation don't occur), but another methods of this service performs Ajax calls as well. </p>
  
  <p>When I try to log error using <code>e.getMessage()</code> I get <em>"undefined"</em> message. Also I tried to wrap RPC calling code using <code>try-catch</code> - no error message. </p>
  
  <p>Can this issue be related with GWT-RPC Serialization? </p>
  
  <p><strong>EDIT:</strong>  Opera Dragonfly showed error on following method inside generated JavaScript (compiled with PRETTY mode): </p>
  
  <p><code>function $check(this$static, typeSignature){
    if (isNull($get_3(this$static.methodMapNative, typeSignature))) {
  Unhandled Object: undefined
      throw new SerializationException_1(typeSignature);
    }
  }</code></p>
  
  <p>with error message</p>
  
  <blockquote>
    <p>Unhandled Object: undefined</p>
  </blockquote>