Problema JSF e Tomahawk

GRAVE: An error occured while initializing MyFaces: javax.faces.context.ExceptionHandlerFactory
java.lang.IllegalArgumentException: javax.faces.context.ExceptionHandlerFactory
	at javax.faces.FactoryFinder.validateFactoryName(FactoryFinder.java:578)
	at javax.faces.FactoryFinder.setFactory(FactoryFinder.java:264)
	at org.apache.myfaces.config.FacesConfigurator.setFactories(FacesConfigurator.java:622)
	at org.apache.myfaces.config.FacesConfigurator.configureFactories(FacesConfigurator.java:600)
	at org.apache.myfaces.config.FacesConfigurator.configure(FacesConfigurator.java:454)
	at org.apache.myfaces.webapp.AbstractFacesInitializer.buildConfiguration(AbstractFacesInitializer.java:303)
	at org.apache.myfaces.webapp.Jsp21FacesInitializer.initContainerIntegration(Jsp21FacesInitializer.java:73)
	at org.apache.myfaces.webapp.AbstractFacesInitializer.initFaces(AbstractFacesInitializer.java:126)
	at org.apache.myfaces.webapp.StartupServletContextListener.contextInitialized(StartupServletContextListener.java:111)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4205)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4704)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
	at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
	at org.apache.catalina.core.StandardService.start(StandardService.java:525)
	at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)

<?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" 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"
	id="WebApp_ID" version="2.5">
	<display-name>projetojsf</display-name>
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.htm</welcome-file>
		<welcome-file>index.jsp</welcome-file>
		<welcome-file>default.html</welcome-file>
		<welcome-file>default.htm</welcome-file>
		<welcome-file>default.jsp</welcome-file>
	</welcome-file-list>
	<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>*.jsf</url-pattern>
	</servlet-mapping>
	<context-param>
		<description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
		<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
		<param-value>server</param-value>
	</context-param>
	<context-param>
		<param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
		<param-value>resources.application</param-value>
	</context-param>
	<listener>
		<listener-class>com.sun.faces.config.ConfigureListener</listener-class>
	</listener>

	<!-- Inicio Config. Tomahawk -->
	<filter>
		<filter-name>MyFacesExtensionsFilter</filter-name>
		<filter-class>org.apache.myfaces.webapp.filter.ExtensionsFilter</filter-class>
		<init-param>
			<param-name>uploadMaxFileSize</param-name>
			<param-value>20m</param-value>
		</init-param>
	</filter>
	<!-- extension mapping for adding <script/>, <link/>, and other resource tags to JSF-pages -->
	<filter-mapping>
		<filter-name>MyFacesExtensionsFilter</filter-name>
		<!-- servlet-name must match the name of your javax.faces.webapp.FacesServlet entry -->
		<servlet-name>Faces Servlet</servlet-name>
	</filter-mapping>
	<!-- extension mapping for serving page-independent resources (javascript,stylesheets, images, etc.) -->
	<filter-mapping>
		<filter-name>MyFacesExtensionsFilter</filter-name>
		<url-pattern>/faces/myFacesExtensionResource/*</url-pattern>
	</filter-mapping>
</web-app>

<?xml version="1.0" encoding="UTF-8"?>

<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">

	<!-- Login e autenticação -->
	<managed-bean>
		<managed-bean-name>autenticador</managed-bean-name>
		<managed-bean-class>br.com.caelum.fj26.LoginMB</managed-bean-class>
		<managed-bean-scope>request</managed-bean-scope>
	</managed-bean>
	
	<navigation-rule>
		<from-view-id>/hello.jsp</from-view-id>
		<navigation-case>
			<from-outcome>Sucesso</from-outcome>
			<to-view-id>/mainpage.jsp</to-view-id>
		</navigation-case>
	</navigation-rule>
	
	<!-- Controle de Fornecedores -->
	<managed-bean>
		<managed-bean-name>controleFornecedores</managed-bean-name>
		<managed-bean-class>br.com.caelum.fj26.FornecedorMB</managed-bean-class>
		<managed-bean-scope>request</managed-bean-scope>
	</managed-bean>
		
	<navigation-rule>
		<from-view-id>/mainpage.jsp</from-view-id>
		<navigation-case>
			<from-outcome>Sucesso</from-outcome>
			<to-view-id>/mainpage.jsp</to-view-id>
		</navigation-case>
	</navigation-rule>
	
	<application>
		<message-bundle>messages</message-bundle>
	</application>
	
</faces-config>