In the ee-composite-showcase application, a Server Internal Error is thrown when clicking on the tree nodes in Tree Components -> Drag and Drop Tree Table.

Error in server log:

WARNING: #{row.toggleRow}: javax.el.MethodNotFoundException: /file:/C:/Servers/apache-tomcat-6.0.26/temp/7-ee-composite-showcase/WEB-INF/lib/icefaces-ee-composite.jar!/META-INF/facelet/treetable/dragDropTreeTable.xhtml @78,98 action="#{row.toggleRow}": Method not found: com.icesoft.faces.facelets.component.treetable.TreeTableNode@10e04be.toggleRow()
javax.faces.FacesException: #{row.toggleRow}: javax.el.MethodNotFoundException: /file:/C:/Servers/apache-tomcat-6.0.26/temp/7-ee-composite-showcase/WEB-INF/lib/icefaces-ee-composite.jar!/META-INF/facelet/treetable/dragDropTreeTable.xhtml @78,98 action="#{row.toggleRow}": Method not found: com.icesoft.faces.facelets.component.treetable.TreeTableNode@10e04be.toggleRow()
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:110)
    at javax.faces.component.UICommand.broadcast(UICommand.java:315)
    at org.icefaces.impl.component.UISeriesBase.broadcast(UISeriesBase.java:481)
    at org.icefaces.impl.component.UISeriesBase.broadcast(UISeriesBase.java:481)
    at com.icesoft.faces.component.paneltabset.PanelTabSet.broadcast(PanelTabSet.java:288)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
    at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
    at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
    at java.lang.Thread.run(Thread.java:619)