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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/tools/ant/BuildListener	at java.lang.Class.forName0(Native Method)	at java.lang.Class.forName(Class.java:164)	at org.apache.jasper.JspCompilationContext.createCompiler(JspCompilationContext.java:233)	at org.apache.jasper.JspCompilationContext.createCompiler(JspCompilationContext.java:215)	at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:559)	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:293)	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)	at org.jboss.portal.portlet.impl.PortletRequestDispatcherImpl.execute(PortletRequestDispatcherImpl.java:77)	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.jboss.portal.server.servlet.CommandFilter.doFilter(CommandFilter.java:65)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:574)	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)	at org.jboss.portal.portlet.impl.PortletRequestDispatcherImpl.include(PortletRequestDispatcherImpl.java:98)	at org.jboss.portal.core.portlet.catalog.CatalogPortlet.render(CatalogPortlet.java:155)	at org.jboss.portlet.JBossPortlet.render(JBossPortlet.java:360)	at org.jboss.portal.portlet.PortletContainer.invokeRender(PortletContainer.java:512)	at org.jboss.portal.portlet.PortletContainer.dispatch(PortletContainer.java:429)	at org.jboss.portal.server.app.ComponentInvocation.dispatch(ComponentInvocation.java:79)	at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:142)	at org.jboss.portal.core.aspects.component.TransactionInterceptor.invoke(TransactionInterceptor.java:69)	at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:37)	at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:132)	at org.jboss.portal.core.aspects.component.HeaderInterceptor.invoke(HeaderInterceptor.java:48)	at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:37)	at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:132)	at org.jboss.portal.server.aspects.component.CacheInterceptor.invoke(CacheInterceptor.java:169)	at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:37)	at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:132)	at org.jboss.portal.server.aspects.component.ModesInterceptor.invoke(ModesInterceptor.java:86)	at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:37)	at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:132)	at org.jboss.portal.server.aspects.component.WindowStatesInterceptor.invoke(WindowStatesInterceptor.java:85)	at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:37)	at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:132)