I see the same exception in the SOAPUI error log when running the tests from the SOAPUI interface:
Mon Aug 13 15:12:25 CEST 2012:ERROR:java.lang.NullPointerException
java.lang.NullPointerException
at com.eviware.soapui.impl.wsdl.loadtest.data.LoadTestStatistics$InternalTestRunListener.afterTestCase(LoadTestStatistics.java:517)
at com.eviware.soapui.impl.wsdl.loadtest.WsdlLoadTestRunner$InternalTestRunListener.afterRun(WsdlLoadTestRunner.java:758)
at com.eviware.soapui.impl.wsdl.support.AbstractTestCaseRunner.notifyAfterRun(AbstractTestCaseRunner.java:300)
at com.eviware.soapui.impl.wsdl.support.AbstractTestCaseRunner.internalFinally(AbstractTestCaseRunner.java:190)
at com.eviware.soapui.impl.wsdl.support.AbstractTestCaseRunner.internalFinally(AbstractTestCaseRunner.java:42)
at com.eviware.soapui.impl.wsdl.support.AbstractTestRunner.run(AbstractTestRunner.java:163)
at com.eviware.soapui.impl.wsdl.loadtest.WsdlLoadTestRunner$InternalTestCaseRunner.run(WsdlLoadTestRunner.java:544)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
