async request problem with 2.0

[Michael Zurke]

hi,

i switched to version 2.0 and i am getting the following error when i
try to execute an async request:

Exception in thread "Thread-180" java.lang.NullPointerException
         at
org.apache.xmlrpc.XmlRpcClient$XmlRpcClientAsyncThread.run(XmlRpcClient.java:271)


the code looks like this:

  Vector params = new Vector(2);
  params.add(123);
  params.add(list_);
  XmlRpcRequest request = new XmlRpcRequest("test", params);
  getRPCClient().executeAsync(request, callback_);

it used to work with version 1.2-b1!

any ideas?

mish