java.lang.ClassCastException: org.netbeans.modules.j2ee.dd.impl.web.WebAppProxy
	at org.netbeans.modules.j2ee.dd.api.web.DDProvider.getBaseBean(DDProvider.java:165)
	at org.netbeans.modules.web.project.ProjectWebModule.getDeploymentDescriptor(ProjectWebModule.java:296)
	at org.netbeans.modules.j2ee.deployment.config.ModuleDeploymentSupport.getDeploymentDescriptor(ModuleDeploymentSupport.java:105)
	at org.netbeans.modules.j2ee.deployment.config.ModuleDeploymentSupport.createRoot(ModuleDeploymentSupport.java:109)
	at org.netbeans.modules.j2ee.deployment.config.ModuleDeploymentSupport.<init>(ModuleDeploymentSupport.java:96)
	at org.netbeans.modules.j2ee.deployment.config.ConfigSupportImpl.<init>(ConfigSupportImpl.java:80)
	at org.netbeans.modules.j2ee.deployment.devmodules.spi.J2eeModuleProvider.getConfigSupport(J2eeModuleProvider.java:64)
	at org.netbeans.modules.j2ee.deployment.devmodules.spi.J2eeModuleProvider.getConfigSupportImpl(J2eeModuleProvider.java:406)
	at org.netbeans.modules.j2ee.deployment.devmodules.spi.J2eeModuleProvider.fireServerChange(J2eeModuleProvider.java:302)
	at org.netbeans.modules.web.project.ProjectWebModule.propertyChange(ProjectWebModule.java:384)
	at org.netbeans.spi.project.support.ant.PropertyUtils$SequentialPropertyEvaluator.stateChanged(PropertyUtils.java:815)
	at org.openide.util.WeakListenerImpl$Change.stateChanged(WeakListenerImpl.java:278)
	at org.netbeans.spi.project.support.ant.ProjectProperties$3.run(ProjectProperties.java:308)
	at org.openide.util.Mutex.readAccess(Mutex.java:195)
	at org.netbeans.spi.project.support.ant.ProjectProperties$PP.fireChange(ProjectProperties.java:315)
	at org.netbeans.spi.project.support.ant.ProjectProperties$PP.put(ProjectProperties.java:186)
	at org.netbeans.spi.project.support.ant.ProjectProperties.putProperties(ProjectProperties.java:99)
	at org.netbeans.spi.project.support.ant.AntProjectHelper$9.run(AntProjectHelper.java:643)
	at org.openide.util.Mutex.writeAccess(Mutex.java:288)
	at org.netbeans.spi.project.support.ant.AntProjectHelper.putProperties(AntProjectHelper.java:641)
	at org.netbeans.modules.web.project.UpdateHelper$2.run(UpdateHelper.java:126)
	at org.openide.util.Mutex.writeAccess(Mutex.java:352)
	at org.netbeans.modules.web.project.UpdateHelper.putProperties(UpdateHelper.java:122)
	at org.netbeans.modules.web.project.ui.customizer.WebProjectProperties.storeProperties(WebProjectProperties.java:480)
	at org.netbeans.modules.web.project.ui.customizer.WebProjectProperties.access$100(WebProjectProperties.java:67)
	at org.netbeans.modules.web.project.ui.customizer.WebProjectProperties$2.run(WebProjectProperties.java:337)
	at org.openide.util.Mutex.writeAccess(Mutex.java:324)
	at org.netbeans.modules.web.project.ui.customizer.WebProjectProperties.save(WebProjectProperties.java:335)
	at org.netbeans.modules.web.project.ui.customizer.CustomizerProviderImpl$OptionListener.actionPerformed(CustomizerProviderImpl.java:293)
	at org.netbeans.modules.project.uiapi.CustomizerDialog$OptionListener.actionPerformed(CustomizerDialog.java:128)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
	at java.awt.Component.processMouseEvent(Component.java:5488)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
	at java.awt.Component.processEvent(Component.java:5253)
	at java.awt.Container.processEvent(Container.java:1966)
	at java.awt.Component.dispatchEventImpl(Component.java:3955)
	at java.awt.Container.dispatchEventImpl(Container.java:2024)
	at java.awt.Component.dispatchEvent(Component.java:3803)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
	at java.awt.Container.dispatchEventImpl(Container.java:2010)
	at java.awt.Window.dispatchEventImpl(Window.java:1774)
	at java.awt.Component.dispatchEvent(Component.java:3803)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
	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)