[Sandbox] Alguém já usou?

Pessoal,

Alguém já utilizou o componente <s:inputSuggestAjax /> da biblioteca Sandbox, do MyFaces? Estou tentando utilizar mas não estou conseguindo, e o erro não me parece muito amigável. Tentei copiar exatamente o exemplo do site e mesmo assim não funciona. O erro que ocorre é este:

javax.el.ELException: /template/template.xhtml: Bean: mbean.ProdutoMBean$$EnhancerByCGLIB$$2fe4c296, property: getSuggestItems
    at com.sun.facelets.compiler.AttributeInstruction.write(AttributeInstruction.java:53)
    at com.sun.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:39)
    at org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChild(RendererUtils.java:412)
    at org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChildren(RendererUtils.java:400)
    at org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChild(RendererUtils.java:417)
    at org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChildren(RendererUtils.java:400)
    at org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.renderChild(RendererUtils.java:417)
    at org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:229)
    at org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:101)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
    at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:252)
    at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
    at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
    at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:573)
    at org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
    at org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:233)
    at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
    at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
    at br.com.advancedit.framework.util.servlet.AdvFacesServlet.service(Unknown Source)
    at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
    at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127)
    at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
    at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)
    at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:17)
    at net.sourceforge.sannotations.web.SASecurityFilter.doFilterInternal(SASecurityFilter.java:62)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)
    at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:17)
    at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
    at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:17)
    at br.com.benoit.catalogo.web.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:60)
    at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:621)
    at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
    at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871)
    at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
    at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:221)
    at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:122)
    at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:111)
    at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
    at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
    at java.lang.Thread.run(Thread.java:619)

No arquivo template.xhtml, tenho o seguinte:

Enquanto que no bean tenho o seguinte:

Alguém saberia me ajudar? Obrigado desde já.

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