Problema com FileUpload do Primefaces usando prettyfaces e JSF 2.2.3

Front-end
#1

Pessoal, bom dia.

Estou desenvolvendo um sistema WEB no Eclipse. Estou usando Tomcat 7, PrimeFaces 4, PrettyFaces 3 e JSF 2.2.3.

Montei uma tela para fazer upload de arquivo. Quando pressiono o botão confirmar, o método “upload” do painelAdministradorBean não é chamado. Se desabilito o pretty-faces tudo funciona normalmente. Alguém saberia me informar qual o possível problema?

Segue abaixo parte do meu código. Desde já agradeço pelas respostas.

Código XHTML:

                                <h:form id="formImportarSNs" enctype="multipart/form-data">
					<p:fieldset legend="Painel do Administrador">

						<p:fileUpload value="#{painelAdministradorBean.arquivo}" mode="simple"/>							
						<p:commandButton ajax="false" actionListener="#{painelAdministradorBean.upload}" value="confirmar" />

					</p:fieldset>
				</h:form>

Código PainelAdministradorBean:

package br.sgrd.bean;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
import javax.faces.context.FacesContext;

import org.primefaces.model.UploadedFile;

@ViewScoped
@ManagedBean
public class PainelAdministradorBean {
	
	private UploadedFile arquivo;
	//private DashboardModel model;

	@PostConstruct
	private void init() {		
	}
	
	@PreDestroy
	private void destroy() {		
	}
	
	public PainelAdministradorBean() {		

	}	
	
	public void upload() {  
        if(arquivo != null) {  
            FacesMessage msg = new FacesMessage("Succesful", arquivo.getFileName() + " is uploaded.");  
            FacesContext.getCurrentInstance().addMessage(null, msg);  
        }  
    }  	
	
	public UploadedFile getArquivo() {
		return arquivo;
	}

	public void setArquivo(UploadedFile arquivo) {
		this.arquivo = arquivo;
	}

}

Código web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
	version="3.0">
	<display-name>GRD</display-name>	
	 
	<filter>
		<filter-name>PrimeFaces FileUpload Filter</filter-name>
		<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
	</filter>
	<filter-mapping>		
		<filter-name>PrimeFaces FileUpload Filter</filter-name>
		<url-pattern>/*</url-pattern>
		<servlet-name>Faces Servlet</servlet-name>
		<dispatcher>FORWARD</dispatcher>
	</filter-mapping>	

	<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>


	<context-param>
		<param-name>primefaces.THEME</param-name>
		<param-value>aristo</param-value>
	</context-param>
	<session-config>
		<session-timeout>30</session-timeout>
	</session-config>
	<listener>
		<listener-class>br.sgrd.utils.HttpSessionChecker</listener-class>
	</listener>

	<context-param>
		<param-name>javax.faces.DATETIMECONVERTER_DEFAULT_TIMEZONE_IS_SYSTEM_TIMEZONE</param-name>
		<param-value>true</param-value>
	</context-param>

	<error-page>
		<location>/erro</location>
	</error-page>

</web-app>

Código pretty-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<pretty-config xmlns="http://ocpsoft.org/schema/rewrite-config-prettyfaces"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://ocpsoft.org/schema/rewrite-config-prettyfaces
                      http://ocpsoft.org/xml/ns/prettyfaces/rewrite-config-prettyfaces.xsd">

	<url-mapping id="login">
		<pattern value="/login" />
		<view-id value="/faces/xhtml/login.xhtml" />
	</url-mapping>

	<url-mapping id="erro">
		<pattern value="/erro" />
		<view-id value="/faces/xhtml/erro.xhtml" />
	</url-mapping>
	
	<url-mapping id="painel_administrador">
		<pattern value="/painel_administrador" />
		<view-id value="/faces/xhtml/painel_administrador.xhtml" />
	</url-mapping>
	
</pretty-config>
#2

Resposta:

#3