I'm try to use richfaces in gatein.

Gatein v.3.1

Portlet bridge v.2.1

richfaces 3.3.3.final

When i use tree switchType = "server" - all ok. But when I set it to "ajax" exception occured when I try to expand tree (first level displayed well):

25.01.2011 13:17:20 org.exoplatform.portal.webui.application.UIPortletActionListener$ServeResourceActionListener execute
SEVERE: Problem while serving resource for the portlet: local._dumbvalue
javax.portlet.PortletException: Error process faces request
    at javax.portlet.faces.GenericFacesPortlet.serveResource(GenericFacesPortlet.java:543)
    at org.gatein.pc.portlet.impl.jsr168.PortletContainerImpl$Invoker.doFilter(PortletContainerImpl.java:575)
    at org.gatein.pc.portlet.impl.jsr168.api.FilterChainImpl.doFilter(FilterChainImpl.java:184)
    at org.gatein.pc.portlet.impl.jsr168.api.FilterChainImpl.doFilter(FilterChainImpl.java:84)
    at org.gatein.pc.portlet.impl.jsr168.PortletContainerImpl.dispatch(PortletContainerImpl.java:506)
    at org.gatein.pc.portlet.container.ContainerPortletDispatcher.invoke(ContainerPortletDispatcher.java:42)
 *********************** 

Caused by: javax.portlet.faces.BridgeException: java.lang.NullPointerException
    at org.jboss.portletbridge.richfaces.RichFacesStrategy.finishResponse(RichFacesStrategy.java:179)
    at org.jboss.portletbridge.richfaces.RichFacesStrategy.afterResourceRequest(RichFacesStrategy.java:267)
    at org.jboss.portletbridge.BridgeStrategyWrapper.afterResourceRequest(BridgeStrategyWrapper.java:133)
    at org.jboss.portletbridge.AjaxPortletBridge.doFacesRequest(AjaxPortletBridge.java:840)
    at javax.portlet.faces.GenericFacesPortlet.serveResource(GenericFacesPortlet.java:541)
    ... 100 more
Caused by: java.lang.NullPointerException
    at org.ajax4jsf.context.ViewResources.processHeadResources(ViewResources.java:401)
    at org.jboss.portletbridge.richfaces.RichFacesStrategy.finishResponse(RichFacesStrategy.java:162)
    ... 104 more

faces-config.xml:

<faces-config xmlns="http://java.sun.com/xml/ns/javaee"
              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"
              version="1.2">



    <application>
      <view-handler>org.jboss.portletbridge.application.PortletViewHandler</view-handler>
      <state-manager>org.jboss.portletbridge.application.PortletStateManager</state-manager>
   </application>


   <managed-bean>
      <managed-bean-name>phoneBook</managed-bean-name>
      <managed-bean-class>
         ru.tersys.projects.gatein.common.phoneBook.jsf.PhoneBookBean
      </managed-bean-class>
      <managed-bean-scope>application</managed-bean-scope>
   </managed-bean>

</faces-config>

web.xml:

<?xml version="1.0"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5">

  <display-name>
      TERSYS PORTLETS
  </display-name>

  <filter>
    <filter-name>ResourceRequestFilter</filter-name>
    <filter-class>org.exoplatform.portal.application.ResourceRequestFilter</filter-class>
  </filter>

  <filter-mapping>
    <filter-name>ResourceRequestFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <context-param>
      <param-name>javax.portlet.faces.renderPolicy</param-name>
      <param-value>ALWAYS_DELEGATE</param-value>
   </context-param>
   <context-param>
      <param-name>org.ajax4jsf.RESOURCE_URI_PREFIX</param-name>
      <param-value>rfRes</param-value>
   </context-param>
   <context-param>
      <param-name>org.richfaces.LoadStyleStrategy</param-name>
      <param-value>ALL</param-value>
   </context-param>
   <context-param>
      <param-name>org.richfaces.LoadScriptStrategy</param-name>
      <param-value>ALL</param-value>
   </context-param>
   <context-param>
      <param-name>org.ajax4jsf.COMPRESS_SCRIPT</param-name>
      <param-value>false</param-value>
   </context-param>

    <filter>
       <display-name>Ajax4jsf Filter</display-name>
       <filter-name>ajax4jsf</filter-name>
       <filter-class>org.ajax4jsf.Filter</filter-class>
    </filter>
   <filter-mapping>
      <filter-name>ajax4jsf</filter-name>
      <servlet-name>Faces Servlet</servlet-name>
      <dispatcher>FORWARD</dispatcher>
      <dispatcher>REQUEST</dispatcher>
      <dispatcher>INCLUDE</dispatcher>
   </filter-mapping>
   <context-param>
      <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
      <param-value>.xhtml</param-value>
   </context-param>
   <context-param>
      <param-name>facelets.DEVELOPMENT</param-name>
      <param-value>false</param-value>
   </context-param>
   <servlet>
      <servlet-name>Faces Servlet</servlet-name>
      <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
      <load-on-startup>1</load-on-startup>
   </servlet>
   <servlet-mapping>
      <servlet-name>Faces Servlet</servlet-name>
      <url-pattern>/faces/*</url-pattern>
   </servlet-mapping>
   <session-config>
      <session-timeout>10</session-timeout>
   </session-config>   

</web-app>

portlet.xml:

<?xml version="1.0" encoding="UTF-8"?>
<portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
version="2.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd
   http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd">

    <portlet>
      <portlet-name>TersysPhoneBookTreePortlet</portlet-name>
      <portlet-class>javax.portlet.faces.GenericFacesPortlet</portlet-class>
      <supports>
         <mime-type>text/html</mime-type>
         <portlet-mode>view</portlet-mode>
      </supports>
      <portlet-info>
         <title>PhoneBook Tree Portlet</title>
      </portlet-info>

      <init-param>
         <name>javax.portlet.faces.defaultViewId.view</name>
         <value>/jsp/PhoneBook/tree.jsp</value>
      </init-param>

    </portlet>


</portlet-app>

tree.jsp:

<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j" %>
<%@ taglib uri="http://richfaces.org/rich" prefix="rich" %>

<f:view>

<h:form>
 <rich:panel>

        <rich:tree style="width:300px" switchType="ajax">
            <rich:recursiveTreeNodesAdaptor roots="#{phoneBook.sourceRoots}" var="item" nodes="#{item.nodes}" />
        </rich:tree>


 </rich:panel>
</h:form>

</f:view>

Plz help to solve this issue!