PPTX Error: org.apache.poi.POIXMLException: java.lang.reflect.InvocationTargetExcepti

consider that i use Tomcat 4.1.18 and jvm 1.5, when i execute this line:
XMLSlideShow ppt = new XMLSlideShow()

i receive thsi error:
org.apache.poi.POIXMLException: org.apache.poi.POIXMLException: java.lang.reflect.InvocationTargetException
at org.apache.poi.xslf.usermodel.XMLSlideShow.<init>( XMLSlideShow.java:82)
at org.apache.poi.xslf.usermodel.XMLSlideShow.<init>( XMLSlideShow.java:68)
at it.sword.dei.client.taglib.GeneratorePowerPoint.co ncatFilesPPTX(GeneratorePowerPoint.java:65)
at it.oxero.dei.client.ext.action.ExecuteConcatReport Action.internalProcess(ExecuteConcatReportAction.j ava:260)
at it.sword.dei.client.function.AbstractFunctionManag er.executeAction(AbstractFunctionManager.java:62)
at it.oxero.dei.client.ext.function.FunctionManager.e xecuteFunction(FunctionManager.java:119)
at it.sword.dei.client.function.AbstractFunctionManag er.manageFunction(AbstractFunctionManager.java:151 )
at it.sword.dei.client.model.jsp.ModelManagerServlet. invokeFunction(ModelManagerServlet.java:57)
at it.sword.dei.client.model.jsp.ModelManagerServlet. performTask(ModelManagerServlet.java:92)
at it.sword.dei.jsp.DeiServlet.service(DeiServlet.jav a:1144)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:853)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:260)
at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(St andardContext.java:2415)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
at org.apache.catalina.valves.ErrorDispatcherValve.in voke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:641)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:172)
at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:641)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(Co yoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:432)
at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:386)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(P oolTcpEndpoint.java:534)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:530)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.poi.POIXMLException: java.lang.reflect.InvocationTargetException
at org.apache.poi.xslf.usermodel.XSLFFactory.createDo cumentPart(XSLFFactory.java:66)
at org.apache.poi.POIXMLDocumentPart.read(POIXMLDocum entPart.java:403)
at org.apache.poi.POIXMLDocument.load(POIXMLDocument. java:155)
at org.apache.poi.xslf.usermodel.XMLSlideShow.<init>( XMLSlideShow.java:80)
... 39 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInsta nce0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInsta nce(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newI nstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.apache.poi.xslf.usermodel.XSLFFactory.createDo cumentPart(XSLFFactory.java:64)
... 42 more
Caused by: java.lang.NoClassDefFoundError
at org.openxmlformats.schemas.presentationml.x2006.ma in.SldMasterDocument$Factory.parse(Unknown Source)
at org.apache.poi.xslf.usermodel.XSLFSlideMaster.<ini t>(XSLFSlideMaster.java:68)
... 47 more

What can i do to solve this problem?
Thanks in advance