We are using OC4J 10.1.3.5 and ADF. I have a popup form and when closing we got error below. I wonder what am I missing and how can I resolve it?

Jun 15, 2010 8:26:49 AM com.sun.faces.lifecycle.ApplyRequestValuesPhase execute
SEVERE: java.lang.IllegalStateException: popView(): No view has been pushed.
javax.faces.el.EvaluationException: java.lang.IllegalStateException: popView(): No view has been pushed.
        at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:150)
        at oracle.adf.view.faces.component.UIXComponentBase.__broadcast(UIXComponentBase.java:1087)
        at oracle.adf.view.faces.component.UIXCommand.broadcast(UIXCommand.java:204)
        at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:269)
        at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:327)
        at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:99)
        at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:110)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:213)
        at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:233)
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:202)
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:12

3)