Integrating with Ready-API! SoapUI Pro NG - Problem with Threadpool

Hi,

I have integrated with SoapUI Pro NG. Now something weird happens when I execute a TestCase via the TestCase Runner.

1. The first execution is done perfectly

2. In Case I loop over the same init and load mechanism and try to execute it again the following message is shown as a soap message:

-- SubmitException: com.eviware.soapui.model.iface.Request$SubmitException: java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.FutureTask@d8c9c7b rejected from java.util.concurrent.ThreadPoolExecutor@7a45f415[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 3]

Has anyone experienced a problem like that?

What is the way to properly shut down soapui pro ng?

Thanks in advance!