HtmlAjaxSupport para componente do RichFaces

Olá, pessoal. Fiz uma página jsp com um componente rich:panelMenu, populado por meio de um binding, e quero adicionar nesse mesmo código o suporte ajax para que qualquer item clicado atualize um a4j:outputPanel .
O problema é que sempre que um item é clicado ocorre o mesmo erro: javax.el.ELException: AjaxUpdate component not found for id :formStore:null
O meu h:form tem a id formStore na minha página JSF. Independente de qual nome do outputPanel que eu especifique, ou mesmo que não especifique, essa mensagem é mostrada, como se não localizasse o ouputPanel do ajax.

A classe que faz o binding com o componente rich:panelMenu :

public HtmlPanelMenu getMenuComponent() {
....
HtmlPanelMenuGroup group = new HtmlPanelMenuGroup();
HtmlAjaxSupport ajaxSupport = new HtmlAjaxSupport();
		ajaxSupport.setEvent("onclick");
		ajaxSupport.setReRender(":formStore:outputPanelModelos");
		group.getChildren().add(ajaxSupport);
		menuComponent.getChildren().add(group);
...

Desconsiderando esse problema, a página e o componente estão funcioando perfeitamente.
Agradeço qualquer ajuda.

Complementando:

a página é template.jsp :

[code]<%@ page language=“java” contentType=“text/html; charset=ISO-8859-1”
pageEncoding=“ISO-8859-1”%>
<%@ taglib prefix=“c” uri=“http://java.sun.com/jsp/jstl/core” %>
<%@ taglib prefix=“f” uri=“http://java.sun.com/jsf/core” %>
<%@ taglib prefix=“h” uri=“http://java.sun.com/jsf/html” %>
<%@ taglib prefix=“t” uri=“http://myfaces.apache.org/tomahawk”%>
<%@ taglib uri=“http://richfaces.org/a4j” prefix=“a4j”%>
<%@ taglib uri=“http://richfaces.org/rich” prefix=“rich”%>

<f:view>
<!DOCTYPE html PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “http://www.w3.org/TR/html4/loose.dtd”>
<html>
<head>
<meta http-equiv=“Content-Type” content=“text/html; charset=ISO-8859-1”>
</head>
<body>
<jsp:include page="/System/header.jsp"></jsp:include>
<h:form id=“formStore”>
<h:panelGrid id=“mainPanel” style=“vertical-align: top;” columns=“2” ><%–columnClasses=“gridContent”–%>
<rich:column style=“vertical-align:top; border-style: none;”>
<rich:panelMenu binding="#{menuBean.menuComponent}" style=“width:200px;” ><!-- mode=“ajax” -->

			&lt;/rich:panelMenu&gt;
		
		&lt;/rich:column&gt;
		&lt;rich:column style="vertical-align:top; border-style: none;"&gt;
		&lt;rich:panel id="panelItens" bodyClass="inpanelBody" style="width:100%"&gt;
			&lt;a4j:outputPanel id="outputPanelModelos"&gt;&lt;!-- ajaxRendered="true" associado ao mode=ajax me causa o problema de atualizar a págia inteira quando o ajax commando button deste painel é clicado--&gt;
				&lt;h:outputText value="Modelos existentes para #{panelMenu.current}" id="current" /&gt;
					&lt;rich:dataTable value="#{panelMenu.modelos}" var="modelo" id="tableModelos" width="100%"&gt;
						&lt;rich:column&gt;
                           
							&lt;h:graphicImage value="/img/store/#{modelo.imagem}"&gt;&lt;/h:graphicImage&gt;
						&lt;/rich:column&gt;
						&lt;rich:column&gt;
							&lt;h:outputText value="#{modelo.nome}"&gt;&lt;/h:outputText&gt;
						&lt;/rich:column&gt;
						&lt;rich:column&gt;
							&lt;h:outputText value="#{modelo.modelo}"&gt;&lt;/h:outputText&gt;
						&lt;/rich:column&gt;
						&lt;rich:column&gt;
							&lt;h:outputText value="#{modelo.fabricante.nome}"&gt;&lt;/h:outputText&gt;
						&lt;/rich:column&gt;
						&lt;rich:column&gt;
						
						
							
						&lt;a4j:region&gt;
							&lt;a4j:commandButton type="button"  image="/img/store/carrinho.gif"  value="Reservar" action="#{sessionCartBean.addToCart}"&gt;
								&lt;a4j:actionparam assignTo="#{sessionCartBean.modeloId }" value="#{modelo.id}" name="modeloId"&gt;&lt;/a4j:actionparam&gt;
								&lt;a4j:support event="onclick" reRender="outputLastItem"&gt;
									
								&lt;/a4j:support&gt;
							&lt;/a4j:commandButton&gt;
						&lt;/a4j:region&gt;
							
							
							
						&lt;/rich:column&gt;
					&lt;/rich:dataTable&gt;
			&lt;/a4j:outputPanel&gt;
		&lt;/rich:panel&gt;
		&lt;/rich:column&gt;
	&lt;/h:panelGrid&gt;

</h:form>
</body>
</html>
</f:view>[/code]

O Managed bean :

[code]package br.gov.xxxxxxx.managedbean.html;

import java.util.Date;
import java.util.List;

import javax.el.ValueExpression;
import javax.faces.application.Application;
import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;
import javax.naming.NamingException;

import org.ajax4jsf.component.html.HtmlAjaxSupport;
import org.ajax4jsf.event.AjaxEvent;
import org.ajax4jsf.event.AjaxListener;
import org.ajax4jsf.taglib.html.jsp.AjaxSupportTag;
import org.apache.myfaces.custom.updateactionlistener.UpdateActionListener;
import org.richfaces.component.html.HtmlPanelMenu;
import org.richfaces.component.html.HtmlPanelMenuGroup;
import org.richfaces.component.html.HtmlPanelMenuItem;

import br.gov.xxxxxxx.entity.CategoriaPojo;
import br.gov.xxxxxxx.managedbean.HelperCategoriaBean;
import br.gov.xxxxxxx.persistence.exception.JcifPersistenceException;

public class SubCategoriasMenuBean implements AjaxListener{

private HtmlPanelMenu menuComponent;
private int parentId;

private static List&lt;CategoriaPojo&gt; subCategorias;

public String loadMenu(){
	
	return "store";
}

public HtmlPanelMenu getMenuComponent() {
	
	menuComponent = null;
	HtmlPanelMenuGroup group = new HtmlPanelMenuGroup();
	group.setLabel("SubCategorias");
	group.setId("groupId_01");
	group.setExpanded(true);
	
	if (menuComponent == null) 
		menuComponent = new HtmlPanelMenu();
	menuComponent.setId("menuCategorias");
	
	System.out.println("subcateg: " + getParentId());
	if(getParentId() == 0)
		return new HtmlPanelMenu();
	
	FacesContext context = FacesContext.getCurrentInstance();
	Application application = context.getApplication();
	
	try {
		subCategorias = new HelperCategoriaBean().listarSubCategorias(getParentId());
	} catch (JcifPersistenceException e) {
		e.printStackTrace();
	} catch (NamingException e) {
		e.printStackTrace();
	}

	for(CategoriaPojo c : subCategorias){
		HtmlPanelMenuItem item = new HtmlPanelMenuItem();

application.createComponent(HtmlPanelMenuItem.COMPONENT_TYPE);
item.setId(“itemId_”+c.getId());
item.setLabel(c.getCategoria());
item.setRendered(true);
Class[] params = {};
ValueBinding propriedade = application.createValueBinding("#{panelMenu.current}");
ValueBinding v = application.createValueBinding(c.getCategoria());
UpdateActionListener u = new UpdateActionListener();
u.setPropertyBinding(propriedade);
u.setValueBinding(v);
item.addActionListener(u);

		ValueBinding p2 = application.createValueBinding("#{panelMenu.subCategoriaId}");
		ValueBinding v2 = application.createValueBinding(String.valueOf(c.getId()));
		UpdateActionListener u2 = new UpdateActionListener();
		u2.setPropertyBinding(p2);
		u2.setValueBinding(v2);
		item.addActionListener(u2);
		
		
		group.getChildren().add(item);
	}
	
	HtmlAjaxSupport ajaxSupport = new HtmlAjaxSupport();
	ajaxSupport.setEvent("onclick");
	ajaxSupport.setReRender(":formStore:outputPanelModelos");
	
	group.getChildren().add(ajaxSupport);
	
	menuComponent.getChildren().add(group);
	menuComponent.setSelectedChild("itemId_"+subCategorias.get(0).getId());
	
	
	
	
	
	
	return menuComponent;
}


public void setMenuComponent(HtmlPanelMenu menuComponent) {
	this.menuComponent = menuComponent;
}





/**
 * @return the parentId
 */
public int getParentId() {
	return parentId;
}


/**
 * @param parentId the parentId to set
 */
public void setParentId(int parentId) {
	this.parentId = parentId;
}

}
[/code]

Espero que isso ajude alguém a me ajudar!