Erro TOM CAT

Front-end
#1

Estou com o seguinte erro alguem pode me ajuda???

06/12/2006 17:59:10 org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet Faces Servlet threw exception
java.lang.NoSuchMethodError: org.apache.myfaces.renderkit.html.util.DummyFormUtils.isWriteDummyForm(Ljavax/faces/context/FacesContext;)Z
	at org.apache.myfaces.renderkit.html.util.ExtensionsPhaseListener.writeCodeBeforeBodyEnd(ExtensionsPhaseListener.java:110)
	at org.apache.myfaces.renderkit.html.util.ExtensionsPhaseListener.getCodeBeforeBodyEnd(ExtensionsPhaseListener.java:96)
	at org.apache.myfaces.renderkit.html.util.ExtensionsPhaseListener.renderCodeBeforeBodyEnd(ExtensionsPhaseListener.java:86)
	at org.apache.myfaces.renderkit.html.util.ExtensionsPhaseListener.afterPhase(ExtensionsPhaseListener.java:66)
	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:211)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
	at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:703)
	at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:670)
	at org.apache.jsp.index_jsp._jspService(index_jsp.java:48)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Unknown Source)
#2