java.lang.NullPointerException at org.openide.explorer.view.BeanTreeView.isEnabled(BeanTreeView.java:130) at javax.swing.plaf.synth.SynthLookAndFeel.getComponentState(SynthLookAndFeel.java:174) at javax.swing.plaf.synth.SynthScrollPaneUI.getComponentState(SynthScrollPaneUI.java:131) at javax.swing.plaf.synth.SynthScrollPaneUI.getContext(SynthScrollPaneUI.java:116) at javax.swing.plaf.synth.SynthDefaultLookup.getDefault(SynthDefaultLookup.java:26) at sun.swing.DefaultLookup.get(DefaultLookup.java:107) at javax.swing.plaf.basic.BasicScrollPaneUI.getInputMap(BasicScrollPaneUI.java:167) at javax.swing.plaf.basic.BasicScrollPaneUI.installKeyboardActions(BasicScrollPaneUI.java:155) at javax.swing.plaf.basic.BasicScrollPaneUI.installUI(BasicScrollPaneUI.java:187) at javax.swing.JComponent.setUI(JComponent.java:614) at javax.swing.JScrollPane.setUI(JScrollPane.java:338) at javax.swing.JScrollPane.updateUI(JScrollPane.java:351) at javax.swing.JScrollPane.(JScrollPane.java:263) at javax.swing.JScrollPane.(JScrollPane.java:309) at org.openide.explorer.view.TreeView.(TreeView.java:130) at org.openide.explorer.view.TreeView.(TreeView.java:123) at org.openide.explorer.view.BeanTreeView.(BeanTreeView.java:39) at org.netbeans.core.NbMainExplorer$ExplorerTab.initGui(NbMainExplorer.java:481) at org.netbeans.core.NbMainExplorer$ExplorerTab.componentShowing(NbMainExplorer.java:448) at org.openide.windows.WindowManager.componentShowing(WindowManager.java:212) at org.netbeans.core.windows.WindowManagerImpl.componentShowing(WindowManagerImpl.java:849) at org.netbeans.core.windows.WorkspaceImpl.addToShownTcs(WorkspaceImpl.java:617) at org.netbeans.core.windows.ModeImpl$1.performCommand(ModeImpl.java:498) at org.netbeans.core.windows.DeferredPerformer.processCommand(DeferredPerformer.java:197) at org.netbeans.core.windows.DeferredPerformer.putRequest(DeferredPerformer.java:91) at org.netbeans.core.windows.ModeImpl.doDockInto(ModeImpl.java:483) at org.netbeans.core.windows.ModeImpl.dockInto(ModeImpl.java:422) at org.netbeans.core.windows.ModeImpl.dockInto(ModeImpl.java:408) at org.netbeans.core.windows.ModeImpl.dockInto(ModeImpl.java:396) at org.netbeans.core.windows.WindowManagerImpl$TopComponentManager.doOpen(WindowManagerImpl.java:1628) at org.netbeans.core.windows.WindowManagerImpl$TopComponentManager.open(WindowManagerImpl.java:1585) at org.openide.windows.TopComponent.open(TopComponent.java:221) at org.openide.explorer.ExplorerPanel.open(ExplorerPanel.java:157) at org.netbeans.core.NbMainExplorer$ExplorerTab.open(NbMainExplorer.java:544) at org.netbeans.core.NbMainExplorer$MainTab.open(NbMainExplorer.java:789) at org.netbeans.core.windows.layers.TCRefImpl.performCommand(TCRefImpl.java:158) at org.netbeans.core.windows.DeferredPerformer.processCommand(DeferredPerformer.java:197) at org.netbeans.core.windows.DeferredPerformer.putRequest(DeferredPerformer.java:91) at org.netbeans.core.windows.layers.TCRefImpl.updateMode(TCRefImpl.java:222) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.addComponents(ModeData.java:855) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateComponents(ModeData.java:669) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateAll(ModeData.java:417) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.loadDataSection(ModeData.java:1292) at org.netbeans.core.windows.ModeImpl.ensureSectionLoaded(ModeImpl.java:2437) at org.netbeans.core.windows.ModeImpl.setVisible(ModeImpl.java:1343) at org.netbeans.core.windows.WorkspaceVisibilityManager.setModesVisibility(WorkspaceVisibilityManager.java:544) at org.netbeans.core.windows.WorkspaceVisibilityManager.processModes(WorkspaceVisibilityManager.java:381) at org.netbeans.core.windows.WorkspaceVisibilityManager.doSetVisible(WorkspaceVisibilityManager.java:187) at org.netbeans.core.windows.WorkspaceVisibilityManager.performCommand(WorkspaceVisibilityManager.java:110) at org.netbeans.core.windows.DeferredPerformer.processCommand(DeferredPerformer.java:197) at org.netbeans.core.windows.DeferredPerformer.stateChanged(DeferredPerformer.java:161) at org.netbeans.core.windows.StateManager.fireStateChanged(StateManager.java:128) at org.netbeans.core.windows.StateManager.setVisibilityState(StateManager.java:153) at org.netbeans.core.windows.StateManager.propertyChange(StateManager.java:175) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:305) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:313) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:242) at java.awt.Component.firePropertyChange(Component.java:7048) at org.netbeans.core.windows.MainWindow.doShowWindow(MainWindow.java:189) at org.netbeans.core.windows.MainWindow.access$100(MainWindow.java:51) at org.netbeans.core.windows.MainWindow$2.run(MainWindow.java:164) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:201) at java.awt.EventQueue.dispatchEvent(EventQueue.java:461) [catch] at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:214) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149) at java.awt.EventDispatchThread.run(EventDispatchThread.java:110) java.lang.ClassCastException: org.netbeans.core.windows.WindowManagerImpl$TopComponentManager at javax.swing.plaf.synth.SynthPanelUI.propertyChange(SynthPanelUI.java:119) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:305) at org.netbeans.core.windows.frames.DefaultContainerImpl.firePropertyChange(DefaultContainerImpl.java:865) at org.netbeans.core.windows.frames.DefaultContainerImpl$DoPropertyChange.run(DefaultContainerImpl.java:1422) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:201) at java.awt.EventQueue.dispatchEvent(EventQueue.java:461) [catch] at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:214) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149) at java.awt.EventDispatchThread.run(EventDispatchThread.java:110) java.lang.NullPointerException at org.netbeans.core.actions.OptionsAction$OptionsPanel.getPreferredSize(OptionsAction.java:251) at org.netbeans.core.actions.OptionsAction$1.run(OptionsAction.java:84) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:201) at java.awt.EventQueue.dispatchEvent(EventQueue.java:461) [catch] at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:214) 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)