Mockresponse not working

We are using mockresponse for asynchronous testing using free version. Till tuesday it was working good but on friday we got this exception while testing:

21:12:14,172 DEBUG [MockEngine] EventNotificationPortBinding MockService was unable to dispatch mock request
com.eviware.soapui.impl.wsdl.mock.DispatchException: Missing operation for soapAction [] and body element [{http://notification.service.event.messaging.wire.com/}notifyEvents] with SOAP Version [SOAP 1.1]
        at com.eviware.soapui.impl.wsdl.support.soap.SoapUtils.findOperationForRequest(SoapUtils.java:353)
        at com.eviware.soapui.impl.wsdl.mock.WsdlMockRunner.dispatchPostRequest(WsdlMockRunner.java:267)
        at com.eviware.soapui.impl.wsdl.mock.WsdlMockRunner.dispatchRequest(WsdlMockRunner.java:390)
        at com.eviware.soapui.monitor.MockEngine$ServerHandler.handle(MockEngine.java:694)
        at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:324)

        at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:535)

        at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:880)

        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:747)

        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)

        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)

        at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)

        at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:520)


We are totally clueless what is wrong. We reinstalled soapui but then now we are not even seeing exception and also mock response not working?

Please help if any one have any idea????