java.lang.ClassNotFoundException: org.netbeans.modules.websvc.jaxrpc.project.AntJaxRpcServicesProvider
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(AccessController.java:0)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at org.apache.tools.ant.module.bridge.AntBridge$MainClassLoader.findClass(AntBridge.java:622)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at org.netbeans.modules.projectapi.LazyLookupProviders.loadPSPInstance(LazyLookupProviders.java:98)
        at org.netbeans.modules.projectapi.LazyLookupProviders.access$000(LazyLookupProviders.java:64)
        at org.netbeans.modules.projectapi.LazyLookupProviders$1$1.beforeLookup(LazyLookupProviders.java:80)
        at org.openide.util.lookup.ProxyLookup$R.myBeforeLookup(ProxyLookup.java:645)
        at org.openide.util.lookup.ProxyLookup$R.computeResult(ProxyLookup.java:518)
        at org.openide.util.lookup.ProxyLookup$R.allInstances(ProxyLookup.java:489)
        at org.openide.util.lookup.ProxyLookup$R.computeResult(ProxyLookup.java:548)
        at org.openide.util.lookup.ProxyLookup$R.allInstances(ProxyLookup.java:489)
        at org.netbeans.modules.websvc.project.spi.LookupMergerSupport$WebServiceDataProviderImpl.setLookup(LookupMergerSupport.java:107)
        at org.netbeans.modules.websvc.project.spi.LookupMergerSupport$WebServiceDataProviderImpl.access$200(LookupMergerSupport.java:86)
        at org.netbeans.modules.websvc.project.spi.LookupMergerSupport$WebServiceDataProviderMerger.merge(LookupMergerSupport.java:81)
        at org.netbeans.modules.websvc.project.spi.LookupMergerSupport$WebServiceDataProviderMerger.merge(LookupMergerSupport.java:70)
        at org.netbeans.spi.project.support.LookupProviderSupport$DelegatingLookupImpl.doDelegate(LookupProviderSupport.java:223)
        at org.netbeans.spi.project.support.LookupProviderSupport$DelegatingLookupImpl.<init>(LookupProviderSupport.java:130)
        at org.netbeans.spi.project.support.LookupProviderSupport$DelegatingLookupImpl.<init>(LookupProviderSupport.java:118)
        at org.netbeans.spi.project.support.LookupProviderSupport.createCompositeLookup(LookupProviderSupport.java:89)
        at org.netbeans.modules.java.j2seproject.J2SEProject.createLookup(J2SEProject.java:341)
        at org.netbeans.modules.java.j2seproject.J2SEProject.<init>(J2SEProject.java:189)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(NativeConstructorAccessorImpl.java:0)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at org.netbeans.modules.project.ant.AntBasedGenericType.createProject(AntBasedGenericType.java:122)
        at org.netbeans.modules.project.ant.AntBasedProjectFactorySingleton.loadProject(AntBasedProjectFactorySingleton.java:240)
        at org.netbeans.api.project.ProjectManager.createProject(ProjectManager.java:354)
        at org.netbeans.api.project.ProjectManager.access$300(ProjectManager.java:80)
        at org.netbeans.api.project.ProjectManager$2.run(ProjectManager.java:275)
        at org.netbeans.api.project.ProjectManager$2.run(ProjectManager.java:227)
        at org.openide.util.Mutex.readAccess(Mutex.java:327)
        at org.netbeans.api.project.ProjectManager.findProject(ProjectManager.java:227)
        at org.netbeans.modules.project.ui.OpenProjectList$RecentProjectList.refresh(OpenProjectList.java:1357)
        at org.netbeans.modules.project.ui.OpenProjectList$NbProjectDeletionListener.fileDeleted(OpenProjectList.java:1614)
        at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEventImpl(FCLSupport.java:139)
        at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEvent(FCLSupport.java:122)
        at org.openide.filesystems.FCLSupport.dispatchEvent(FCLSupport.java:99)
        at org.openide.filesystems.FileObject$ED.dispatch(FileObject.java:1014)
        at org.openide.filesystems.EventControl.invokeDispatchers(EventControl.java:203)
        at org.openide.filesystems.EventControl.exitAtomicAction(EventControl.java:177)
        at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:122)
        at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:509)
        at org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem.refresh(FileBasedFileSystem.java:153)
        at org.netbeans.modules.compapp.projects.jbi.anttasks.BuildServiceAssembly.execute(BuildServiceAssembly.java:230)
        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
        at sun.reflect.GeneratedMethodAccessor302.invoke(GeneratedMethodAccessor302.java:0)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
        at org.apache.tools.ant.Task.perform(Task.java:348)
        at org.apache.tools.ant.Target.execute(Target.java:357)
        at org.apache.tools.ant.Target.performTasks(Target.java:385)
        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
        at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
        at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
        at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:278)
        at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:497)
        at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:151)
Caused: while loading from {service=org.netbeans.modules.websvc.project.spi.WebServiceDataProvider, class=org.netbeans.modules.websvc.jaxrpc.project.AntJaxRpcServicesProvider, instanceCreate=org.netbeans.modules.projectapi.LazyLookupProviders$1@1ed2dec}