Erro em datascroller - alguem pode me ajudar?

Front-end
#1

Pessoal, estou com um problema em uma rich:datascroller na minha rich:dataTable;

alguem pode me ajudar?

olha a saida:

SEVERE: Servlet.service() for servlet Faces Servlet threw exception
java.lang.NoSuchMethodError: org.richfaces.component.UIDatascroller.setupFirstRowValue()V
	at org.richfaces.component.DataScrollerViewPhaseListener.updateScrollers(DataScrollerViewPhaseListener.java:54)
	at org.richfaces.component.DataScrollerViewPhaseListener.updateScrollers(DataScrollerViewPhaseListener.java:59)
	at org.richfaces.component.DataScrollerViewPhaseListener.updateScrollers(DataScrollerViewPhaseListener.java:59)
	at org.richfaces.component.DataScrollerViewPhaseListener.updateScrollers(DataScrollerViewPhaseListener.java:59)
	at org.richfaces.component.DataScrollerViewPhaseListener.updateScrollers(DataScrollerViewPhaseListener.java:59)
	at org.richfaces.component.DataScrollerViewPhaseListener.updateScrollers(DataScrollerViewPhaseListener.java:59)
	at org.richfaces.component.DataScrollerViewPhaseListener.beforePhase(DataScrollerViewPhaseListener.java:68)
	at javax.faces.component.UIViewRoot.notifyPhaseListeners(UIViewRoot.java:605)
	at javax.faces.component.UIViewRoot.encodeBegin(UIViewRoot.java:537)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:884)
	at com.sun.faces.application.ViewHandlerImpl.doRenderView(ViewHandlerImpl.java:244)
	at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:175)
	at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
	at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
	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:141)
	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
	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:175)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	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:286)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Unknown Source)
#2