Marshal Exception in My webMethods Server while searching any particular transaction

Hi Guys,

We are facing an error in My webMethods Server while searching any particular transaction under Monitoring>Integration>B2B>Transactions. Whenever we do a Trasaction search by selecting any query field and run SQL query , we encounter the following error.

java.rmi.MarshalException: electric.xml.io.schema.SchemaException: could not find property _operator in java class com.webmethods.caf.is.wsclient.wm.tn.portal.queries.getsql.__criteria2
at electric.soap.wsdl.SOAPOperation.writeRequest(SOAPOperation.java:403)
at electric.soap.java.reference.JavaToSOAP.invoke(JavaToSOAP.java:223)
at electric.soap.java.reference.JavaToSOAP.invoke(JavaToSOAP.java:165)
at electric.proxy.handler.Proxy.invoke(Proxy.java:126)
at $Proxy31.getSQL(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.webmethods.caf.wsclient.proxy.impl.WSClientDynamicProxy.invokeMethod(WSClientDynamicProxy.java:89)
at com.webmethods.caf.wsclient.proxy.impl.WSClientDynamicProxy.invoke(WSClientDynamicProxy.java:134)
at $Proxy30.getSQL(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.webmethods.caf.faces.data.object.ObjectMethodContentProvider.refresh(ObjectMethodContentProvider.java:366)
at com.webmethods.caf.faces.bean.BaseFacesBean.resolveDataBinding(BaseFacesBean.java:237)
at com.webmethods.portlet.wm_tn_ta_search.Wm_tn_ta_searchViewPage.getGetSQL(Wm_tn_ta_searchViewPage.java:1995)
at com.webmethods.portlet.wm_tn_ta_search.Wm_tn_ta_searchViewPage.doSQLGathering(Wm_tn_ta_searchViewPage.java:1661)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
at com.webmethods.caf.faces.application.CAFMethodBinding.invoke(CAFMethodBinding.java:67)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
at javax.faces.component.UICommand.broadcast(UICommand.java:312)
at com.webmethods.caf.faces.component.ViewRoot.broadcastEvents(ViewRoot.java:202)
at com.webmethods.caf.faces.component.ViewRoot.processApplication(ViewRoot.java:116)
at com.webmethods.caf.faces.portlet.PortletLifecycle$InvokeApplicationPhase.execute(PortletLifecycle.java:670)
at com.webmethods.caf.faces.portlet.PortletLifecycle.phase(PortletLifecycle.java:250)
at com.webmethods.caf.faces.portlet.PortletLifecycle.execute(PortletLifecycle.java:145)
at com.webmethods.caf.faces.portlet.FacesPortlet.processAction(FacesPortlet.java:326)
at com.webmethods.portal.framework.portletcontainer.impl.PortletApplicationHandler.process(PortletApplicationHandler.java:477)
at com.webmethods.portal.framework.portletcontainer.servlet.PortletServlet.service(PortletServlet.java:58)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:428)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:473)
at org.mortbay.jetty.servlet.Dispatcher.dispatch(Dispatcher.java:286)
at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:171)
at com.webmethods.portal.framework.portletcontainer.PortletContainer.dispatch(PortletContainer.java:218)
at com.webmethods.portal.framework.portletcontainer.PortletContainer.process(PortletContainer.java:129)
at com.webmethods.portal.framework.portletcontainer.PortletContainer.processPortletAction(PortletContainer.java:107)
at com.webmethods.portal.framework.portlet.beans.rest.RestfulPCAHandler.handle(RestfulPCAHandler.java:182)
at com.webmethods.portal.framework.dispatch.DispatchManager.handle(DispatchManager.java:438)
at com.webmethods.portal.framework.dispatch.DispatchManager.handleDispatch(DispatchManager.java:371)
at com.webmethods.portal.framework.impl.PortalServlet.service(PortalServlet.java:242)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:428)
at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:830)
at com.webmethods.portal.framework.impl.NTLMFilter.doFilter(NTLMFilter.java:50)
at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
at com.webmethods.caf.faces.servlet.GZIPFilter.doFilter(GZIPFilter.java:32)
at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
at com.webmethods.caf.faces.servlet.XSSFilter.doFilter(XSSFilter.java:22)
at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:471)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:568)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1530)
at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:633)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1482)
at com.webmethods.portal.webApplication.WmWebAppContext.handle(WmWebAppContext.java:161)
at org.mortbay.http.HttpServer.service(HttpServer.java:909)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:820)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:986)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:837)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:245)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)

Following is the My webMethods Server version information.
Version: 7.1.3.0.108
Build: 108
Build Date: 2010-03-21
Service Pack: None installed
Installed Fixes: MWS_7.1.3_Fix4

Kindly let me know if anyone has encountered such error before and whether there is any fix installation needed to solve this error.

Thanks,
Sourav