java.lang.AssertionError: OperationSupport cannot be null because OperationContainer contains elements: [] and invalid elements [] at org.netbeans.modules.autoupdate.ui.wizards.InstallStep.handleInstall(InstallStep.java:564) at org.netbeans.modules.autoupdate.ui.wizards.InstallStep.doDownloadAndVerificationAndInstall(InstallStep.java:216) at org.netbeans.modules.autoupdate.ui.wizards.InstallStep.access$200(InstallStep.java:105) at org.netbeans.modules.autoupdate.ui.wizards.InstallStep$2.run(InstallStep.java:202) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454) at org.openide.util.RequestProcessor$Processor.doEvaluate(RequestProcessor.java:2083) at org.openide.util.RequestProcessor$Task.waitFinished(RequestProcessor.java:1688) at org.netbeans.modules.autoupdate.ui.wizards.InstallStep$1.propertyChange(InstallStep.java:185) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276) at java.awt.Component.firePropertyChange(Component.java:8255) at org.netbeans.modules.autoupdate.ui.wizards.OperationPanel.access$200(OperationPanel.java:67) at org.netbeans.modules.autoupdate.ui.wizards.OperationPanel$1.run(OperationPanel.java:105) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2036) Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.AssertionError: OperationSupport cannot be null because OperationContainer contains elements: [] and invalid elements [] at org.openide.util.RequestProcessor.post(RequestProcessor.java:435) at org.netbeans.modules.autoupdate.ui.wizards.OperationPanel.addNotify(OperationPanel.java:93) at java.awt.Container.addNotify(Container.java:2620) at javax.swing.JComponent.addNotify(JComponent.java:4693) at java.awt.Container.addNotify(Container.java:2620) at javax.swing.JComponent.addNotify(JComponent.java:4693) at java.awt.Container.addNotify(Container.java:2620) at javax.swing.JComponent.addNotify(JComponent.java:4693) at java.awt.Container.addNotify(Container.java:2620) at javax.swing.JComponent.addNotify(JComponent.java:4693) at org.netbeans.modules.autoupdate.ui.wizards.PanelBodyContainer.addNotify(PanelBodyContainer.java:109) at java.awt.Container.addImpl(Container.java:1066) at java.awt.Container.add(Container.java:925) at org.netbeans.core.windows.services.NbPresenter.initializeMessage(NbPresenter.java:388) at org.netbeans.core.windows.services.NbPresenter.propertyChange(NbPresenter.java:1143) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276) at org.openide.NotifyDescriptor.firePropertyChange(NotifyDescriptor.java:768) at org.openide.NotifyDescriptor.setMessage(NotifyDescriptor.java:356) at org.openide.WizardDescriptor.updateStateOpen(WizardDescriptor.java:943) at org.openide.WizardDescriptor.updateState(WizardDescriptor.java:799) at org.openide.WizardDescriptor.goToNextStep(WizardDescriptor.java:1037) at org.openide.WizardDescriptor.access$1600(WizardDescriptor.java:89) at org.openide.WizardDescriptor$Listener$2.run(WizardDescriptor.java:2100) at org.openide.WizardDescriptor.lazyValidate(WizardDescriptor.java:1474) at org.openide.WizardDescriptor.access$1700(WizardDescriptor.java:89) at org.openide.WizardDescriptor$Listener.actionPerformed(WizardDescriptor.java:2119) at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:0) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:457) at $Proxy45.actionPerformed(.java:0) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:6382) at javax.swing.JComponent.processMouseEvent(JComponent.java:3275) at java.awt.Component.processEvent(Component.java:6147) at java.awt.Container.processEvent(Container.java:2083) at java.awt.Component.dispatchEventImpl(Component.java:4744) at java.awt.Container.dispatchEventImpl(Container.java:2141) at java.awt.Component.dispatchEvent(Component.java:4572) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4619) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4280) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4210) at java.awt.Container.dispatchEventImpl(Container.java:2127) at java.awt.Window.dispatchEventImpl(Window.java:2489) at java.awt.Component.dispatchEvent(Component.java:4572) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:704) at java.awt.EventQueue.access$400(EventQueue.java:82) at java.awt.EventQueue$2.run(EventQueue.java:663) at java.awt.EventQueue$2.run(EventQueue.java:661) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98) at java.awt.EventQueue$3.run(EventQueue.java:677) at java.awt.EventQueue$3.run(EventQueue.java:675) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.awt.EventQueue.dispatchEvent(EventQueue.java:674) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:205) at java.awt.Dialog$1.run(Dialog.java:1044) at java.awt.Dialog$3.run(Dialog.java:1096) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.awt.Dialog.show(Dialog.java:1094) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1074) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1114) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1096) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:126) at org.openide.util.Mutex.doEventAccess(Mutex.java:1363) at org.openide.util.Mutex.readAccess(Mutex.java:273) at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1081) at java.awt.Component.show(Component.java:1591) at java.awt.Component.setVisible(Component.java:1543) at java.awt.Window.setVisible(Window.java:843) at java.awt.Dialog.setVisible(Dialog.java:984) at org.netbeans.modules.autoupdate.ui.wizards.InstallUnitWizard.implInvokeWizard(InstallUnitWizard.java:97) at org.netbeans.modules.autoupdate.ui.wizards.InstallUnitWizard.invokeWizard(InstallUnitWizard.java:82) at org.netbeans.modules.autoupdate.ui.wizards.InstallUnitWizard.invokeWizard(InstallUnitWizard.java:77) at org.netbeans.modules.autoupdate.ui.wizards.InstallUnitWizard.invokeWizard(InstallUnitWizard.java:73) at org.netbeans.modules.autoupdate.ui.UnitTab$AvailableAction.performerImpl(UnitTab.java:1324) at org.netbeans.modules.autoupdate.ui.UnitTab$TabAction.actionPerformed(UnitTab.java:1115) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:6382) at javax.swing.JComponent.processMouseEvent(JComponent.java:3275) at java.awt.Component.processEvent(Component.java:6147) at java.awt.Container.processEvent(Container.java:2083) at java.awt.Component.dispatchEventImpl(Component.java:4744) at java.awt.Container.dispatchEventImpl(Container.java:2141) at java.awt.Component.dispatchEvent(Component.java:4572) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4619) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4280) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4210) at java.awt.Container.dispatchEventImpl(Container.java:2127) at java.awt.Window.dispatchEventImpl(Window.java:2489) at java.awt.Component.dispatchEvent(Component.java:4572) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:704) at java.awt.EventQueue.access$400(EventQueue.java:82) at java.awt.EventQueue$2.run(EventQueue.java:663) at java.awt.EventQueue$2.run(EventQueue.java:661) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98) at java.awt.EventQueue$3.run(EventQueue.java:677) at java.awt.EventQueue$3.run(EventQueue.java:675) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.awt.EventQueue.dispatchEvent(EventQueue.java:674) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)