Error on bundle message

hi,

i try to use my own Message like jsf sample like this

<f:loadBundle basename="marketingSystem.bundles.Testing" var="bundle" />

but i got an error like this

SEVERE: Servlet.service() for servlet jsp threw exception

java.lang.NullPointerException

at com.sun.faces.taglib.jsf_core.LoadBundleTag.doStartTag(LoadBundleTag.java:96)

at org.apache.jsp.index_jsp._jspx_meth_f_loadBundle_0(org.apache.jsp.index_jsp:91)

at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:59)

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:322)

at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)

at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)

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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:407)

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:856)

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)

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(Thread.java:595)

May 10, 2005 4:44:21 PM org.apache.catalina.core.StandardWrapperValve invoke

SEVERE: Servlet.service() for servlet jsp threw exception

java.lang.NullPointerException

at com.sun.faces.taglib.jsf_core.LoadBundleTag.doStartTag(LoadBundleTag.java:96)

at org.apache.jsp.index_jsp._jspx_meth_ft_loadBundle_0(org.apache.jsp.index_jsp:91)