[Resolvido]Proplema com RichFaces

<h:panelGrid columnClasses="acent">
            <rich:dataScroller for="table" maxPages="5" />
            <rich:dataTable value="#{alunoBean.alunosByNome}" var="al" id="table" rows="10">
                <rich:column >
                    <f:facet name="header">
                        <h:outputText value="Aluno " />
                    </f:facet>
                    <h:outputText value="#{alunoBean.aluno.nome}" />
                </rich:column>
                <rich:column>
                    <f:facet name="header">
                        <h:outputText value="Turma" />
                    </f:facet>
                    <h:outputText value="#{alunoBean.aluno.turma}" />
                </rich:column>
                <rich:column>
                    <f:facet name="header">
                        <h:outputText value="Celular" />
                    </f:facet>
                    <h:outputText value="#{alunoBean.aluno.telCel}" />
                </rich:column>
                <rich:column>
                    <f:facet name="header">
                        <h:outputText value="Responsavel:" />
                    </f:facet>
                    <h:outputText value="#{alunoBean.aluno.responsavel}" />
                </rich:column>
                
            </rich:dataTable>
            <rich:dataScroller for="table" maxPages="5" />
        </h:panelGrid>

GRAVE: Error Rendering View[/consultaAluno.jsp]
com.sun.facelets.tag.TagException: /consultaAluno.jsp @29,59 <rich:dataScroller> Tag Library supports namespace: http://richfaces.org/rich, but no tag was defined for name: dataScroller
	at com.sun.facelets.compiler.CompilationManager.pushTag(CompilationManager.java:193)
	at com.sun.facelets.compiler.SAXCompiler$CompilationHandler.startElement(SAXCompiler.java:194)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501)
	at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:179)
	at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.emptyElement(XMLDTDValidator.java:788)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:377)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2755)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
	at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
	at javax.xml.parsers.SAXParser.parse(SAXParser.java:395)
	at javax.xml.parsers.SAXParser.parse(SAXParser.java:198)
	at com.sun.facelets.compiler.SAXCompiler.doCompile(SAXCompiler.java:232)
	at com.sun.facelets.compiler.Compiler.compile(Compiler.java:105)
	at com.sun.facelets.impl.DefaultFaceletFactory.createFacelet(DefaultFaceletFactory.java:218)
	at com.sun.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFaceletFactory.java:149)
	at com.sun.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFaceletFactory.java:100)
	at com.sun.facelets.FaceletViewHandler.buildView(FaceletViewHandler.java:519)
	at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:569)
	at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
	at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
	at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
	at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Thread.java:662)