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    org.apache.http.config.Lookup class is in httpcore-4.3.jar not in httpclient-4.3.1.jar

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java.lang.NoClassDefFoundError: org/apache/velocity/context/Context	at java.lang.Class.forName0(Native Method)	at java.lang.Class.forName(Class.java:164)	at net.sf.navigator.menu.MenuRepository.class$(MenuRepository.java:31)	at net.sf.navigator.menu.MenuRepository.addMenuDisplayerMapping(MenuRepository.java:164)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:585)	at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:216)	at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:208)	at org.apache.commons.digester.Rule.end(Rule.java:228)	at org.apache.commons.digester.Digester.endElement(Digester.java:1067)	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:633)	at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:221)	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:872)	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1693)	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:368)	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:834)	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:148)	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1242)	at org.apache.commons.digester.Digester.parse(Digester.java:1591)	at net.sf.navigator.menu.MenuRepository.load(MenuRepository.java:202)	at net.sf.navigator.menu.MenuContextListener.contextInitialized(MenuContextListener.java:62)	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3729)	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4183)	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)	at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)	at org.apache.catalina.core.StandardService.start(StandardService.java:450)	at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)	at org.apache.catalina.startup.Catalina.start(Catalina.java:551)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:585)	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:275)	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)