java.lang.AssertionError: OperationSupport cannot be null because OperationContainer contains elements: [] and invalid elements [] at org.netbeans.modules.autoupdate.ui.wizards.InstallStep.handleValidation(InstallStep.java:417) at org.netbeans.modules.autoupdate.ui.wizards.InstallStep.doDownloadAndVerificationAndInstall(InstallStep.java:213) 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:1452) at org.openide.util.RequestProcessor$Processor.doEvaluate(RequestProcessor.java:2078) at org.openide.util.RequestProcessor$Task.waitFinished(RequestProcessor.java:1686) at org.netbeans.modules.autoupdate.ui.wizards.InstallStep$1.propertyChange(InstallStep.java:185) at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263) at java.awt.Component.firePropertyChange(Component.java:8381) 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:1452) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2032) Caused: org.openide.util.RequestProcessor$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:2769) at javax.swing.JComponent.addNotify(JComponent.java:4743) at java.awt.Container.addNotify(Container.java:2769) at javax.swing.JComponent.addNotify(JComponent.java:4743) at java.awt.Container.addNotify(Container.java:2769) at javax.swing.JComponent.addNotify(JComponent.java:4743) at java.awt.Container.addNotify(Container.java:2769) at javax.swing.JComponent.addNotify(JComponent.java:4743) at org.netbeans.modules.autoupdate.ui.wizards.PanelBodyContainer.addNotify(PanelBodyContainer.java:109) at java.awt.Container.addImpl(Container.java:1114) at java.awt.Container.add(Container.java:966) at org.netbeans.core.windows.services.NbPresenter.initializeMessage(NbPresenter.java:386) at org.netbeans.core.windows.services.NbPresenter.propertyChange(NbPresenter.java:1136) at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263) at org.openide.NotifyDescriptor.firePropertyChange(NotifyDescriptor.java:768) at org.openide.NotifyDescriptor.setMessage(NotifyDescriptor.java:356) at org.openide.WizardDescriptor.updateStateOpen(WizardDescriptor.java:987) at org.openide.WizardDescriptor.updateState(WizardDescriptor.java:844) at org.openide.WizardDescriptor.goToNextStep(WizardDescriptor.java:1081) at org.openide.WizardDescriptor.access$1500(WizardDescriptor.java:139) at org.openide.WizardDescriptor$Listener$1.run(WizardDescriptor.java:2118) at org.openide.WizardDescriptor.lazyValidate(WizardDescriptor.java:1516) at org.openide.WizardDescriptor.access$1600(WizardDescriptor.java:139) at org.openide.WizardDescriptor$Listener.actionPerformed(WizardDescriptor.java:2137) at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:0) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:457) at $Proxy30.actionPerformed(.java:0) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) at java.awt.Component.processMouseEvent(Component.java:6504) at javax.swing.JComponent.processMouseEvent(JComponent.java:3321) at java.awt.Component.processEvent(Component.java:6269) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4860) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4686) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4492) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4422) at java.awt.Container.dispatchEventImpl(Container.java:2273) at java.awt.Window.dispatchEventImpl(Window.java:2713) at java.awt.Component.dispatchEvent(Component.java:4686) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707) at java.awt.EventQueue.access$000(EventQueue.java:101) at java.awt.EventQueue$3.run(EventQueue.java:666) at java.awt.EventQueue$3.run(EventQueue.java:664) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87) at java.awt.EventQueue$4.run(EventQueue.java:680) at java.awt.EventQueue$4.run(EventQueue.java:678) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:677) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:121) at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:182) at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:221) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:219) at java.awt.Dialog.show(Dialog.java:1072) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1072) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1107) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1094) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:126) at org.openide.util.Mutex.doEventAccess(Mutex.java:1363) at org.openide.util.Mutex.readAccess(Mutex.java:273) at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1079) at java.awt.Component.show(Component.java:1650) at java.awt.Component.setVisible(Component.java:1602) at java.awt.Window.setVisible(Window.java:1013) at java.awt.Dialog.setVisible(Dialog.java:1003) at org.netbeans.modules.autoupdate.ui.wizards.InstallUnitWizard.implInvokeWizard(InstallUnitWizard.java:97) at org.netbeans.modules.autoupdate.ui.wizards.InstallUnitWizard.invokeWizard(InstallUnitWizard.java:82) at org.netbeans.modules.autoupdate.ui.wizards.InstallUnitWizard.invokeWizard(InstallUnitWizard.java:77) at org.netbeans.modules.autoupdate.ui.wizards.InstallUnitWizard.invokeWizard(InstallUnitWizard.java:73) at org.netbeans.modules.autoupdate.ui.UnitTab$AvailableAction.performerImpl(UnitTab.java:1324) at org.netbeans.modules.autoupdate.ui.UnitTab$TabAction.actionPerformed(UnitTab.java:1115) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) at java.awt.Component.processMouseEvent(Component.java:6504) at javax.swing.JComponent.processMouseEvent(JComponent.java:3321) at java.awt.Component.processEvent(Component.java:6269) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4860) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4686) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4492) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4422) at java.awt.Container.dispatchEventImpl(Container.java:2273) at java.awt.Window.dispatchEventImpl(Window.java:2713) at java.awt.Component.dispatchEvent(Component.java:4686) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707) at java.awt.EventQueue.access$000(EventQueue.java:101) at java.awt.EventQueue$3.run(EventQueue.java:666) at java.awt.EventQueue$3.run(EventQueue.java:664) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87) at java.awt.EventQueue$4.run(EventQueue.java:680) at java.awt.EventQueue$4.run(EventQueue.java:678) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:677) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105) at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)