java.lang.ClassNotFoundException: org.netbeans.modules.websvc.webservices.ProjectWebServicesSupportProvider
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(AccessController.java:0)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:231)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at java.lang.Class.forName0(Class.java:0)
        at java.lang.Class.forName(Class.java:242)
        at org.openide.util.lookup.MetaInfServicesLookup.search(MetaInfServicesLookup.java:266)
        at org.openide.util.lookup.MetaInfServicesLookup.beforeLookup(MetaInfServicesLookup.java:120)
        at org.openide.util.lookup.AbstractLookup$R.beforeLookup(AbstractLookup.java:1053)
        at org.openide.util.lookup.ProxyLookup$R.myBeforeLookup(ProxyLookup.java:582)
        at org.openide.util.lookup.ProxyLookup$R.computeResult(ProxyLookup.java:449)
        at org.openide.util.lookup.ProxyLookup$R.allInstances(ProxyLookup.java:422)
        at org.netbeans.modules.websvc.api.webservices.WebServicesSupport.getWebServicesSupport(WebServicesSupport.java:97)
        at org.netbeans.modules.websvc.jaxrpc.nodes.JaxRpcWebServiceNodeFactory$WsNodeList.addNotify(JaxRpcWebServiceNodeFactory.java:121)
        at org.netbeans.spi.project.ui.support.NodeFactorySupport$DelegateChildren.addNotify(NodeFactorySupport.java:167)
        at org.openide.nodes.Children.callAddNotify(Children.java:541)
        at org.openide.nodes.Children.getArray(Children.java:583)
        at org.openide.nodes.Children.getNodes(Children.java:491)
        at org.openide.nodes.FilterNode$Children.getNodes(FilterNode.java:1470)
        at org.netbeans.modules.web.project.ui.WebLogicalViewProvider.findPath(WebLogicalViewProvider.java:164)
        at org.netbeans.modules.project.ui.ProjectsRootNode.findNode(ProjectsRootNode.java:169)
        at org.netbeans.modules.project.ui.ProjectTab.selectNode(ProjectTab.java:429)
        at org.netbeans.modules.project.ui.ProjectUtilities$3$1.run(ProjectUtilities.java:282)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)