java.io.IOException
        at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.instanceCreate(XMLSettingsSupport.java:426)
        at org.openide.loaders.InstanceDataObject$SettingsInstance.instanceCreate(InstanceDataObject.java:1042)
        at org.netbeans.core.windows.PersistenceManager.lookupTCInstance(PersistenceManager.java:419)
        at org.netbeans.core.windows.WindowManagerImpl.lookupTCInstance(WindowManagerImpl.java:863)
        at org.netbeans.core.windows.layers.TCRefImpl.getTopComponent(TCRefImpl.java:261)
        at org.netbeans.core.windows.layers.TCRefImpl.updateMode(TCRefImpl.java:158)
        at org.netbeans.core.windows.layers.ModeData$CookiesImpl.addComponents(ModeData.java:542)
        at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateComponents(ModeData.java:430)
        at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateAll(ModeData.java:297)
        at org.netbeans.core.windows.layers.ModeData$CookiesImpl.loadDataSection(ModeData.java:815)
        at org.netbeans.core.windows.ModeImpl.ensureSectionLoaded(ModeImpl.java:1699)
        at org.netbeans.core.windows.ModeImpl.setVisible(ModeImpl.java:947)
        at org.netbeans.core.windows.WorkspaceVisibilityManager.setModesVisibility(WorkspaceVisibilityManager.java:310)
        at org.netbeans.core.windows.WorkspaceVisibilityManager.processModes(WorkspaceVisibilityManager.java:261)
        at org.netbeans.core.windows.WorkspaceVisibilityManager.doSetVisible(WorkspaceVisibilityManager.java:169)
        at org.netbeans.core.windows.WorkspaceVisibilityManager.performCommand(WorkspaceVisibilityManager.java:97)
        at org.netbeans.core.windows.DeferredPerformer.processCommand(DeferredPerformer.java:165)
        at org.netbeans.core.windows.DeferredPerformer.stateChanged(DeferredPerformer.java:136)
        at org.netbeans.core.windows.StateManager.fireStateChanged(StateManager.java:117)
        at org.netbeans.core.windows.StateManager.setVisibilityState(StateManager.java:142)
        at org.netbeans.core.windows.StateManager.componentShown(StateManager.java:152)
        at java.awt.Component.processComponentEvent(Component.java:3604)
        at java.awt.Component.processEvent(Component.java:3556)
        at java.awt.Container.processEvent(Container.java:1164)
        at java.awt.Window.processEvent(Window.java:779)
        at java.awt.Component.dispatchEventImpl(Component.java:2593)
        at java.awt.Container.dispatchEventImpl(Container.java:1213)
        at java.awt.Window.dispatchEventImpl(Window.java:914)
        at java.awt.Component.dispatchEvent(Component.java:2497)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)