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I installed MDR according to the installation instructions. It seemed to install fine. Then I followed the documentation page named "First Steps with MDR." I did exactly as the instructions say as follows: <instructions> First Steps with MDR To start using MDR follow these steps: Go to "View" menu, you should see "FreeStyle Browser" as one of items in this menu. Click on it - a new FreeStyle browser window will pop up. Right-click on the root node in the window ("NetBeans - FreeStyle") - choose "Set Look"->"Metadata" in the pop-up menu that will appear. Now you can see a node representing the MDR and after expanding it, you can see the content of the repository. </instructions> Every thing works until I try to expand the MDR node. Then it crashes with an Unexpected Exception message, and usually does not shut down gracefully, requiring task manager to shut Netbeans down. The following is the data from the log file: ------------------------------------------------------------------------------- >Log Session: Thursday, February 14, 2002 4:11:28 PM EST >System Info: Product Version = NetBeans IDE 3.3.1 (Build 200202011224) IDE Versioning = IDE/1 spec=1.43.2 impl=200202011224 Operating System = Windows NT version 4.0 running on x86 Java; VM; Vendor = 1.3.1; Java HotSpot(TM) Client VM 1.3.1-b24; Sun Microsystems Inc. Java Home = C:\JDK13~1.1\jre System Locale; Encod. = en_US; Cp1252 Home Dir; Current Dir = C:\WINNT\Profiles\dfrankel; c:\netbeans IDE Install; User Dir = C:\netbeans; c:\netbeans\My Documents\NetbeansProjects CLASSPATH = C:\netbeans\lib\patches\openide- compat.jar;C:\netbeans\lib\core.jar;C:\netbeans\lib\openide.jar;C:\netbeans\lib\ ext\crimson.jar;C:\netbeans\lib\ext\jh.jar;C:\netbeans\lib\ext\regexp.jar;C:\net beans\lib\ext\rmi- ext.jar;C:\netbeans\lib\ext\terminalemulator.jar;C:\netbeans\lib\ext\xerces.jar; C:\JDK13~1.1\lib\dt.jar;C:\JDK13~1.1\lib\tools.jar ------------------------------------------------------------------------------- Existing modules: Ant [org.apache.tools.ant.module/2 2.7.2 200202011224] Applet [org.netbeans.modules.applet/1 1.7.2 200202011224] Auto Update [org.netbeans.modules.autoupdate/1 2.1.1 200202011224] Bean Patterns [org.netbeans.modules.beans/1 1.7.2 200202011224] Built-in CVS Client [org.netbeans.modules.cvsclient/1 1.4.2 200202011224] CVS Command-Line Client Backward Compatibility [org.netbeans.modules.vcs.cmdline.compat/1 1.0.2 200202011224] Editor [org.netbeans.modules.editor/1 1.8.2 200202011224] External HTML Browser [org.netbeans.modules.extbrowser/1 0.3.2 200202011224] Form Editor [org.netbeans.modules.form/2 1.7.2 200202011224] Free Style Browser [org.netbeans.modules.freestylebrowser/1 1.0 200201081828] General Online Help [org.netbeans.modules.usersguide/1 1.9.2 200202011224] HTML [org.netbeans.modules.html/1 1.8.2 200202011224] HTTP Server [org.netbeans.modules.httpserver/1 1.7.2 200202011224] IDE Core [org.netbeans.core/1 1.1] Image [org.netbeans.modules.image/1 1.7.2 200202011224] Internationalization [org.netbeans.modules.i18n/1 1.9.2 200202011224] Internationalization of Form [org.netbeans.modules.i18n.form/2 1.8.2 200202011224] JAR Packager [org.netbeans.modules.jarpackager/2 1.9.2 200202011224] JNDI [org.netbeans.modules.jndi/1 1.4.2 200202011224] JPDA Debugger [org.netbeans.modules.debugger.jpda/1 1.9.2 200202011224] JSP Syntax Coloring [org.netbeans.modules.web.core.syntax/1 1.5.2 200202011224] JSP/Servlet [org.netbeans.modules.web.core/1 1.5.2 200202011224] Java Source Files [org.netbeans.modules.java/1 1.7.2 200202011224] Javadoc [org.netbeans.modules.javadoc/1 1.7.2 200202011224] MOF metadata repository [org.netbeans.modules.mdr/1 0.2 20020109-1911] Metadata Repository Toolkit [org.netbeans.modules.mdrtoolkit/1 0.2 20020109-1911] New Module Wizard [org.netbeans.modules.apisupport.lite/1 0.2.2 200202011224] Projects [org.netbeans.modules.projects/1 1.7.2 200202011224] RMI [org.netbeans.modules.rmi/1 1.4.2 200202011224] Resource Bundle Syntax Coloring [org.netbeans.modules.properties.syntax/1 1.7.2 200202011224] Resource Bundles [org.netbeans.modules.properties/1 1.7.2 200202011224] Scripting Support [org.netbeans.modules.scripting/1 1.4.2 200202011224] Sourceless Java Classes [org.netbeans.modules.clazz/1 1.8.2 200202011224] Text [org.netbeans.modules.text/1 1.7.2 200202011224] Tomcat 3.2 Server [org.netbeans.modules.web.tomcat/1 1.3.2 200202011224] Tools Debugger [org.netbeans.modules.debugger.debug/1 1.9.2 200202011224] User Utilities [org.netbeans.modules.utilities/1 1.7.2 200202011224] VCS Generic Command-Line Support [org.netbeans.modules.vcs.advanced/1 1.5.2 200202011224] *********** Exception occurred ************ Thu Feb 14 16:11:56 EST 2002: org.openide.util.io.SafeException: Could not restore Explorer window; the root node "NetBeans - FreeStyle" is not persistent. Annotation: Cannot read class org.openide.explorer.ExplorerPanel Annotation: Source: Windows/Components/Explorer #005BNetBeans - FreeStyle#005D_1.settings Annotation: Content: <?xml version="1.0"?> <!DOCTYPE settings PUBLIC "-//NetBeans//DTD Session settings 1.0//EN" "http://www.netbeans.org/dtds/sessionsettings-1_0.dtd"> <settings version="1.0"> <instanceof class="java.lang.Object"/> <instanceof class="javax.swing.JComponent"/> <instanceof class="java.awt.image.ImageObserver"/> <instanceof class="org.openide.explorer.ExplorerManager$Provider"/> <instanceof class="java.io.Externalizable"/> <instanceof class="java.awt.Container"/> <instanceof class="java.io.Serializable"/> <instanceof class="javax.accessibility.Accessible"/> <instanceof class="java.awt.MenuContainer"/> <instanceof class="java.awt.Component"/> <instanceof class="org.openide.explorer.ExplorerPanel"/> <instanceof class="org.openide.windows.TopComponent"/> <serialdata class="org.openide.explorer.ExplorerPanel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serialdata> </settings> Nested annotation: Could not restore Explorer window; the root node "NetBeans - FreeStyle" is not persistent. java.io.IOException: Could not restore Explorer window; the root node "NetBeans - FreeStyle" is not persistent. at org.openide.windows.TopComponent$Replacer.readObject (TopComponent.java:797) at java.lang.reflect.Method.invoke(Native Method) at java.io.ObjectInputStream.invokeObjectReader (ObjectInputStream.java:2214) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) [catch] at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.readSerial (XMLSettingsSupport.java:400) at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.instanceCreate (XMLSettingsSupport.java:430) at org.openide.loaders.InstanceDataObject$SettingsInstance.instanceCreate (InstanceDataObject.java:1215) at org.netbeans.core.windows.PersistenceManager.lookupTCInstance (PersistenceManager.java:350) at org.netbeans.core.windows.WindowManagerImpl.lookupTCInstance (WindowManagerImpl.java:877) at org.netbeans.core.windows.layers.TCRefImpl.getTopComponent (TCRefImpl.java:357) at org.netbeans.core.windows.layers.TCRefImpl.updateMode (TCRefImpl.java:198) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.addComponents (ModeData.java:764) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateComponents (ModeData.java:629) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.loadDataSection (ModeData.java:1090) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateProperties (ModeData.java:487) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateAll (ModeData.java:397) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.createInstance (ModeData.java:341) at org.netbeans.core.windows.layers.ICFolderImpl$R.run (ICFolderImpl.java:261) at org.netbeans.core.windows.layers.ICFolderImpl.instanceCreate (ICFolderImpl.java:123) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.createModes (WorkspaceData.java:470) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.updateModes (WorkspaceData.java:407) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.updateAll (WorkspaceData.java:342) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.loadDataSectio n(WorkspaceData.java:667) at org.netbeans.core.windows.WorkspaceImpl.ensureSectionLoaded (WorkspaceImpl.java:958) at org.netbeans.core.windows.WorkspaceImpl.setVisible (WorkspaceImpl.java:687) at org.netbeans.core.windows.WindowManagerImpl$1.run (WindowManagerImpl.java:431) at org.netbeans.core.windows.WindowManagerImpl.setCurrentWorkspace (WindowManagerImpl.java:392) at org.netbeans.core.windows.WorkspaceImpl$1.run(WorkspaceImpl.java:468) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154) at java.awt.EventQueue.dispatchEvent(EventQueue.java:337) at java.awt.EventDispatchThread.pumpOneEventForHierarchy (EventDispatchThread.java:131) at java.awt.EventDispatchThread.pumpEventsForHierarchy (EventDispatchThread.java:98) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:85) Thu Feb 14 16:11:56 EST 2002: java.io.IOException: Could not restore Explorer window; the root node "NetBeans - FreeStyle" is not persistent. Nested annotation: Could not restore Explorer window; the root node "NetBeans - FreeStyle" is not persistent. java.io.IOException: Could not restore Explorer window; the root node "NetBeans - FreeStyle" is not persistent. at org.openide.explorer.ExplorerManager.readObject (ExplorerManager.java:534) at java.lang.reflect.Method.invoke(Native Method) at java.io.ObjectInputStream.invokeObjectReader (ObjectInputStream.java:2214) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) at org.openide.util.io.NbMarshalledObject.get (NbMarshalledObject.java:90) at org.openide.explorer.ExplorerPanel.readExternal (ExplorerPanel.java:235) at org.openide.windows.TopComponent$Replacer.readObject (TopComponent.java:761) at java.lang.reflect.Method.invoke(Native Method) at java.io.ObjectInputStream.invokeObjectReader (ObjectInputStream.java:2214) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) [catch] at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.readSerial (XMLSettingsSupport.java:400) at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.instanceCreate (XMLSettingsSupport.java:430) at org.openide.loaders.InstanceDataObject$SettingsInstance.instanceCreate (InstanceDataObject.java:1215) at org.netbeans.core.windows.PersistenceManager.lookupTCInstance (PersistenceManager.java:350) at org.netbeans.core.windows.WindowManagerImpl.lookupTCInstance (WindowManagerImpl.java:877) at org.netbeans.core.windows.layers.TCRefImpl.getTopComponent (TCRefImpl.java:357) at org.netbeans.core.windows.layers.TCRefImpl.updateMode (TCRefImpl.java:198) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.addComponents (ModeData.java:764) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateComponents (ModeData.java:629) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.loadDataSection (ModeData.java:1090) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateProperties (ModeData.java:487) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateAll (ModeData.java:397) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.createInstance (ModeData.java:341) at org.netbeans.core.windows.layers.ICFolderImpl$R.run (ICFolderImpl.java:261) at org.netbeans.core.windows.layers.ICFolderImpl.instanceCreate (ICFolderImpl.java:123) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.createModes (WorkspaceData.java:470) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.updateModes (WorkspaceData.java:407) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.updateAll (WorkspaceData.java:342) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.loadDataSectio n(WorkspaceData.java:667) at org.netbeans.core.windows.WorkspaceImpl.ensureSectionLoaded (WorkspaceImpl.java:958) at org.netbeans.core.windows.WorkspaceImpl.setVisible (WorkspaceImpl.java:687) at org.netbeans.core.windows.WindowManagerImpl$1.run (WindowManagerImpl.java:431) at org.netbeans.core.windows.WindowManagerImpl.setCurrentWorkspace (WindowManagerImpl.java:392) at org.netbeans.core.windows.WorkspaceImpl$1.run(WorkspaceImpl.java:468) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154) at java.awt.EventQueue.dispatchEvent(EventQueue.java:337) at java.awt.EventDispatchThread.pumpOneEventForHierarchy (EventDispatchThread.java:131) at java.awt.EventDispatchThread.pumpEventsForHierarchy (EventDispatchThread.java:98) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:85) Thu Feb 14 16:11:56 EST 2002: java.io.IOException: Could not restore Explorer window; the root node "NetBeans - FreeStyle" is not persistent. java.io.IOException: Could not restore Explorer window; the root node "NetBeans - FreeStyle" is not persistent. at org.openide.explorer.ExplorerManager.readObject (ExplorerManager.java:534) at java.lang.reflect.Method.invoke(Native Method) at java.io.ObjectInputStream.invokeObjectReader (ObjectInputStream.java:2214) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) at org.openide.util.io.NbMarshalledObject.get (NbMarshalledObject.java:90) at org.openide.explorer.ExplorerPanel.readExternal (ExplorerPanel.java:235) at org.openide.windows.TopComponent$Replacer.readObject (TopComponent.java:761) at java.lang.reflect.Method.invoke(Native Method) at java.io.ObjectInputStream.invokeObjectReader (ObjectInputStream.java:2214) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) [catch] at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.readSerial (XMLSettingsSupport.java:400) at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.instanceCreate (XMLSettingsSupport.java:430) at org.openide.loaders.InstanceDataObject$SettingsInstance.instanceCreate (InstanceDataObject.java:1215) at org.netbeans.core.windows.PersistenceManager.lookupTCInstance (PersistenceManager.java:350) at org.netbeans.core.windows.WindowManagerImpl.lookupTCInstance (WindowManagerImpl.java:877) at org.netbeans.core.windows.layers.TCRefImpl.getTopComponent (TCRefImpl.java:357) at org.netbeans.core.windows.layers.TCRefImpl.updateMode (TCRefImpl.java:198) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.addComponents (ModeData.java:764) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateComponents (ModeData.java:629) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.loadDataSection (ModeData.java:1090) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateProperties (ModeData.java:487) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateAll (ModeData.java:397) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.createInstance (ModeData.java:341) at org.netbeans.core.windows.layers.ICFolderImpl$R.run (ICFolderImpl.java:261) at org.netbeans.core.windows.layers.ICFolderImpl.instanceCreate (ICFolderImpl.java:123) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.createModes (WorkspaceData.java:470) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.updateModes (WorkspaceData.java:407) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.updateAll (WorkspaceData.java:342) at org.netbeans.core.windows.layers.WorkspaceData$InstanceCookieImpl.loadDataSectio n(WorkspaceData.java:667) at org.netbeans.core.windows.WorkspaceImpl.ensureSectionLoaded (WorkspaceImpl.java:958) at org.netbeans.core.windows.WorkspaceImpl.setVisible (WorkspaceImpl.java:687) at org.netbeans.core.windows.WindowManagerImpl$1.run (WindowManagerImpl.java:431) at org.netbeans.core.windows.WindowManagerImpl.setCurrentWorkspace (WindowManagerImpl.java:392) at org.netbeans.core.windows.WorkspaceImpl$1.run(WorkspaceImpl.java:468) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154) at java.awt.EventQueue.dispatchEvent(EventQueue.java:337) at java.awt.EventDispatchThread.pumpOneEventForHierarchy (EventDispatchThread.java:131) at java.awt.EventDispatchThread.pumpEventsForHierarchy (EventDispatchThread.java:98) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:85) *********** Exception occurred ************ Thu Feb 14 16:11:56 EST 2002: org.openide.util.io.SafeException: Could not restore Explorer window; the root node "null" is not persistent. Annotation: Cannot read class org.netbeans.modules.freestylebrowser.ui.ObjectBrowser Annotation: Source: Windows/Components/Explorer #005B#005D_1.settings Annotation: Content: <?xml version="1.0"?> <!DOCTYPE settings PUBLIC "-//NetBeans//DTD Session settings 1.0//EN" "http://www.netbeans.org/dtds/sessionsettings-1_0.dtd"> <settings version="1.0"> <module name="org.netbeans.modules.freestylebrowser/1" spec="1.0"/> <instanceof class="java.awt.Container"/> <instanceof class="org.openide.explorer.ExplorerManager$Provider"/> <instanceof class="java.awt.MenuContainer"/> <instanceof class="org.openide.windows.TopComponent"/> <instanceof class="org.openide.explorer.ExplorerPanel"/> <instanceof class="java.io.Serializable"/> <instanceof class="java.awt.image.ImageObserver"/> <instanceof class="java.awt.Component"/> <instanceof class="org.netbeans.modules.freestylebrowser.ui.ObjectBrowser"/> <instanceof class="javax.swing.JComponent"/> <instanceof class="javax.accessibility.Accessible"/> <instanceof class="java.lang.Object"/> <instanceof class="java.io.Externalizable"/> <serialdata class="org.netbeans.modules.freestylebrowser.ui.ObjectBrowser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serialdata> </settings> Nested annotation: Could not restore Explorer window; the root node "null" is not persistent. java.io.IOException: Could not restore Explorer window; the root node "null" is not persistent. at org.openide.windows.TopComponent$Replacer.readObject (TopComponent.java:797) at java.lang.reflect.Method.invoke(Native Method) at java.io.ObjectInputStream.invokeObjectReader (ObjectInputStream.java:2214) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) [catch] at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.readSerial (XMLSettingsSupport.java:400) at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.instanceCreate (XMLSettingsSupport.java:430) at org.openide.loaders.InstanceDataObject$SettingsInstance.instanceCreate (InstanceDataObject.java:1215) at org.netbeans.core.windows.PersistenceManager.lookupTCInstance (PersistenceManager.java:350) at org.netbeans.core.windows.WindowManagerImpl.lookupTCInstance (WindowManagerImpl.java:877) at org.netbeans.core.windows.layers.TCRefImpl.getTopComponent (TCRefImpl.java:357) at org.netbeans.core.windows.layers.TCRefImpl.updateMode (TCRefImpl.java:198) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.addComponents (ModeData.java:764) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateComponents (ModeData.java:629) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateAll (ModeData.java:401) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.loadDataSection (ModeData.java:1067) at org.netbeans.core.windows.ModeImpl.ensureSectionLoaded (ModeImpl.java:2099) at org.netbeans.core.windows.ModeImpl.doGetTopComponents (ModeImpl.java:779) at org.netbeans.core.windows.ModeImpl.getTopComponents (ModeImpl.java:766) at org.netbeans.core.windows.WorkspaceImpl.findMode (WorkspaceImpl.java:571) at org.netbeans.core.windows.ModeImpl$2.performCommand (ModeImpl.java:467) at org.netbeans.core.windows.DeferredPerformer.processCommand (DeferredPerformer.java:186) at org.netbeans.core.windows.DeferredPerformer.stateChanged (DeferredPerformer.java:155) 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.propertyChange (StateManager.java:164) at java.beans.PropertyChangeSupport.firePropertyChange (PropertyChangeSupport.java:230) at java.beans.PropertyChangeSupport.firePropertyChange (PropertyChangeSupport.java:157) at java.awt.Component.firePropertyChange(Component.java:4471) at org.netbeans.core.windows.MainWindow.doShowWindow (MainWindow.java:232) at org.netbeans.core.windows.MainWindow.access$300(MainWindow.java:57) at org.netbeans.core.windows.MainWindow$4.run(MainWindow.java:207) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154) at java.awt.EventQueue.dispatchEvent(EventQueue.java:337) at java.awt.EventDispatchThread.pumpOneEventForHierarchy (EventDispatchThread.java:131) at java.awt.EventDispatchThread.pumpEventsForHierarchy (EventDispatchThread.java:98) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:85) Thu Feb 14 16:11:56 EST 2002: java.io.IOException: Could not restore Explorer window; the root node "null" is not persistent. Nested annotation: Could not restore Explorer window; the root node "null" is not persistent. java.io.IOException: Could not restore Explorer window; the root node "null" is not persistent. at org.openide.explorer.ExplorerManager.readObject (ExplorerManager.java:534) at java.lang.reflect.Method.invoke(Native Method) at java.io.ObjectInputStream.invokeObjectReader (ObjectInputStream.java:2214) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) at org.openide.util.io.NbMarshalledObject.get (NbMarshalledObject.java:90) at org.openide.explorer.ExplorerPanel.readExternal (ExplorerPanel.java:235) at org.netbeans.modules.freestylebrowser.ui.ObjectBrowser.readExternal (ObjectBrowser.java:146) at org.openide.windows.TopComponent$Replacer.readObject (TopComponent.java:761) at java.lang.reflect.Method.invoke(Native Method) at java.io.ObjectInputStream.invokeObjectReader (ObjectInputStream.java:2214) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) [catch] at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.readSerial (XMLSettingsSupport.java:400) at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.instanceCreate (XMLSettingsSupport.java:430) at org.openide.loaders.InstanceDataObject$SettingsInstance.instanceCreate (InstanceDataObject.java:1215) at org.netbeans.core.windows.PersistenceManager.lookupTCInstance (PersistenceManager.java:350) at org.netbeans.core.windows.WindowManagerImpl.lookupTCInstance (WindowManagerImpl.java:877) at org.netbeans.core.windows.layers.TCRefImpl.getTopComponent (TCRefImpl.java:357) at org.netbeans.core.windows.layers.TCRefImpl.updateMode (TCRefImpl.java:198) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.addComponents (ModeData.java:764) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateComponents (ModeData.java:629) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateAll (ModeData.java:401) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.loadDataSection (ModeData.java:1067) at org.netbeans.core.windows.ModeImpl.ensureSectionLoaded (ModeImpl.java:2099) at org.netbeans.core.windows.ModeImpl.doGetTopComponents (ModeImpl.java:779) at org.netbeans.core.windows.ModeImpl.getTopComponents (ModeImpl.java:766) at org.netbeans.core.windows.WorkspaceImpl.findMode (WorkspaceImpl.java:571) at org.netbeans.core.windows.ModeImpl$2.performCommand (ModeImpl.java:467) at org.netbeans.core.windows.DeferredPerformer.processCommand (DeferredPerformer.java:186) at org.netbeans.core.windows.DeferredPerformer.stateChanged (DeferredPerformer.java:155) 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.propertyChange (StateManager.java:164) at java.beans.PropertyChangeSupport.firePropertyChange (PropertyChangeSupport.java:230) at java.beans.PropertyChangeSupport.firePropertyChange (PropertyChangeSupport.java:157) at java.awt.Component.firePropertyChange(Component.java:4471) at org.netbeans.core.windows.MainWindow.doShowWindow (MainWindow.java:232) at org.netbeans.core.windows.MainWindow.access$300(MainWindow.java:57) at org.netbeans.core.windows.MainWindow$4.run(MainWindow.java:207) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154) at java.awt.EventQueue.dispatchEvent(EventQueue.java:337) at java.awt.EventDispatchThread.pumpOneEventForHierarchy (EventDispatchThread.java:131) at java.awt.EventDispatchThread.pumpEventsForHierarchy (EventDispatchThread.java:98) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:85) Thu Feb 14 16:11:56 EST 2002: java.io.IOException: Could not restore Explorer window; the root node "null" is not persistent. java.io.IOException: Could not restore Explorer window; the root node "null" is not persistent. at org.openide.explorer.ExplorerManager.readObject (ExplorerManager.java:534) at java.lang.reflect.Method.invoke(Native Method) at java.io.ObjectInputStream.invokeObjectReader (ObjectInputStream.java:2214) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) at org.openide.util.io.NbMarshalledObject.get (NbMarshalledObject.java:90) at org.openide.explorer.ExplorerPanel.readExternal (ExplorerPanel.java:235) at org.netbeans.modules.freestylebrowser.ui.ObjectBrowser.readExternal (ObjectBrowser.java:146) at org.openide.windows.TopComponent$Replacer.readObject (TopComponent.java:761) at java.lang.reflect.Method.invoke(Native Method) at java.io.ObjectInputStream.invokeObjectReader (ObjectInputStream.java:2214) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) [catch] at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.readSerial (XMLSettingsSupport.java:400) at org.openide.loaders.XMLSettingsSupport$SettingsRecognizer.instanceCreate (XMLSettingsSupport.java:430) at org.openide.loaders.InstanceDataObject$SettingsInstance.instanceCreate (InstanceDataObject.java:1215) at org.netbeans.core.windows.PersistenceManager.lookupTCInstance (PersistenceManager.java:350) at org.netbeans.core.windows.WindowManagerImpl.lookupTCInstance (WindowManagerImpl.java:877) at org.netbeans.core.windows.layers.TCRefImpl.getTopComponent (TCRefImpl.java:357) at org.netbeans.core.windows.layers.TCRefImpl.updateMode (TCRefImpl.java:198) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.addComponents (ModeData.java:764) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateComponents (ModeData.java:629) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.updateAll (ModeData.java:401) at org.netbeans.core.windows.layers.ModeData$CookiesImpl.loadDataSection (ModeData.java:1067) at org.netbeans.core.windows.ModeImpl.ensureSectionLoaded (ModeImpl.java:2099) at org.netbeans.core.windows.ModeImpl.doGetTopComponents (ModeImpl.java:779) at org.netbeans.core.windows.ModeImpl.getTopComponents (ModeImpl.java:766) at org.netbeans.core.windows.WorkspaceImpl.findMode (WorkspaceImpl.java:571) at org.netbeans.core.windows.ModeImpl$2.performCommand (ModeImpl.java:467) at org.netbeans.core.windows.DeferredPerformer.processCommand (DeferredPerformer.java:186) at org.netbeans.core.windows.DeferredPerformer.stateChanged (DeferredPerformer.java:155) 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.propertyChange (StateManager.java:164) at java.beans.PropertyChangeSupport.firePropertyChange (PropertyChangeSupport.java:230) at java.beans.PropertyChangeSupport.firePropertyChange (PropertyChangeSupport.java:157) at java.awt.Component.firePropertyChange(Component.java:4471) at org.netbeans.core.windows.MainWindow.doShowWindow (MainWindow.java:232) at org.netbeans.core.windows.MainWindow.access$300(MainWindow.java:57) at org.netbeans.core.windows.MainWindow$4.run(MainWindow.java:207) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154) at java.awt.EventQueue.dispatchEvent(EventQueue.java:337) at java.awt.EventDispatchThread.pumpOneEventForHierarchy (EventDispatchThread.java:131) at java.awt.EventDispatchThread.pumpEventsForHierarchy (EventDispatchThread.java:98) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:85) *********** Exception occurred ************ Thu Feb 14 16:12:21 EST 2002: java.lang.NullPointerException: <no message> java.lang.NullPointerException at java.util.Hashtable.put(Hashtable.java:385) at org.netbeans.modules.mdrtoolkit.looks.MDRepositoryLook$Delegate.getChildObjects (MDRepositoryLook.java:53) at org.openidex.nodes.looks.FilterLook.getChildObjects (FilterLook.java:261) at org.openidex.nodes.looks.AcceptorLook.getChildObjects (AcceptorLook.java:158) at org.openidex.nodes.looks.CompositeLook.getChildObjects (CompositeLook.java:399) at org.openidex.nodes.looks.LookChildren.getKeys(LookChildren.java:67) at org.openidex.nodes.looks.LookChildren.addNotify(LookChildren.java:36) at org.openide.nodes.Children.callAddNotify(Children.java:336) at org.openide.nodes.ChildrenArray.create(ChildrenArray.java:51) at org.openide.nodes.Children.getArray(Children.java:365) at org.openide.nodes.Children.computeNodes(Children.java:355) at org.openide.nodes.Children.getNodes(Children.java:284) at org.openide.explorer.view.VisualizerNode$1.run (VisualizerNode.java:149) at org.openide.util.Mutex.readAccess(Mutex.java:171) at org.openide.explorer.view.VisualizerNode.getChildren (VisualizerNode.java:147) at org.openide.explorer.view.VisualizerNode.getChildCount (VisualizerNode.java:187) at javax.swing.tree.DefaultTreeModel.getChildCount (DefaultTreeModel.java:163) at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand (VariableHeightLayoutCache.java:1412) at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand (VariableHeightLayoutCache.java:1221) at javax.swing.tree.VariableHeightLayoutCache.ensurePathIsExpanded (VariableHeightLayoutCache.java:917) at javax.swing.tree.VariableHeightLayoutCache.setExpandedState (VariableHeightLayoutCache.java:162) at javax.swing.plaf.basic.BasicTreeUI.updateExpandedDescendants (BasicTreeUI.java:1428) at javax.swing.plaf.basic.BasicTreeUI$TreeExpansionHandler.treeExpanded (BasicTreeUI.java:2239) at javax.swing.JTree.fireTreeExpanded(JTree.java:2114) at javax.swing.JTree.setExpandedState(JTree.java:2794) at javax.swing.JTree.expandPath(JTree.java:1646) at javax.swing.plaf.basic.BasicTreeUI.toggleExpandState (BasicTreeUI.java:2022) at javax.swing.plaf.basic.BasicTreeUI.handleExpandControlClick (BasicTreeUI.java:2009) at javax.swing.plaf.basic.BasicTreeUI.checkForClickInExpandControl (BasicTreeUI.java:1963) at javax.swing.plaf.basic.BasicTreeUI$MouseHandler.mousePressed (BasicTreeUI.java:2674) at java.awt.AWTEventMulticaster.mousePressed (AWTEventMulticaster.java:220) at java.awt.AWTEventMulticaster.mousePressed (AWTEventMulticaster.java:220) at java.awt.AWTEventMulticaster.mousePressed (AWTEventMulticaster.java:220) at java.awt.Component.processMouseEvent(Component.java:3712) at java.awt.Component.processEvent(Component.java:3544) at java.awt.Container.processEvent(Container.java:1164) at java.awt.Component.dispatchEventImpl(Component.java:2593) at java.awt.Container.dispatchEventImpl(Container.java:1213) at java.awt.Component.dispatchEvent(Component.java:2497) at java.awt.LightweightDispatcher.retargetMouseEvent (Container.java:2451) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2210) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2125) at java.awt.Container.dispatchEventImpl(Container.java:1200) at java.awt.Window.dispatchEventImpl(Window.java:914) at java.awt.Component.dispatchEvent(Component.java:2497) at java.awt.EventQueue.dispatchEvent(EventQueue.java:339) [catch] at java.awt.EventDispatchThread.pumpOneEventForHierarchy (EventDispatchThread.java:131) at java.awt.EventDispatchThread.pumpEventsForHierarchy (EventDispatchThread.java:98) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:85) *********** Exception occurred ************ Thu Feb 14 16:12:45 EST 2002: java.lang.NullPointerException: <no message> java.lang.NullPointerException at java.util.Hashtable.put(Hashtable.java:385) at org.netbeans.modules.mdrtoolkit.looks.MDRepositoryLook$Delegate.getChildObjects (MDRepositoryLook.java:53) at org.openidex.nodes.looks.FilterLook.getChildObjects (FilterLook.java:261) at org.openidex.nodes.looks.AcceptorLook.getChildObjects (AcceptorLook.java:158) at org.openidex.nodes.looks.CompositeLook.getChildObjects (CompositeLook.java:399) at org.openidex.nodes.looks.LookChildren.getKeys(LookChildren.java:67) at org.openidex.nodes.looks.LookChildren.addNotify(LookChildren.java:36) at org.openide.nodes.Children.callAddNotify(Children.java:336) at org.openide.nodes.ChildrenArray.create(ChildrenArray.java:51) at org.openide.nodes.Children.getArray(Children.java:365) at org.openide.nodes.Children.computeNodes(Children.java:355) at org.openide.nodes.Children.getNodes(Children.java:284) at org.openide.explorer.view.VisualizerNode$1.run (VisualizerNode.java:149) at org.openide.util.Mutex.readAccess(Mutex.java:171) at org.openide.explorer.view.VisualizerNode.getChildren (VisualizerNode.java:147) at org.openide.explorer.view.VisualizerNode.getChildCount (VisualizerNode.java:187) at javax.swing.tree.DefaultTreeModel.getChildCount (DefaultTreeModel.java:163) at javax.swing.plaf.basic.BasicTreeUI.paintExpandControl (BasicTreeUI.java:1261) at javax.swing.plaf.basic.BasicTreeUI.paint(BasicTreeUI.java:1109) at javax.swing.plaf.metal.MetalTreeUI.paint(MetalTreeUI.java:139) at javax.swing.plaf.ComponentUI.update(ComponentUI.java:39) at javax.swing.JComponent.paintComponent(JComponent.java:395) at javax.swing.JComponent.paint(JComponent.java:687) at javax.swing.JComponent.paintChildren(JComponent.java:498) at javax.swing.JComponent.paint(JComponent.java:696) at javax.swing.JViewport.paint(JViewport.java:668) at javax.swing.JComponent.paintChildren(JComponent.java:498) at javax.swing.JComponent.paint(JComponent.java:696) at javax.swing.JComponent.paintChildren(JComponent.java:498) at javax.swing.JComponent.paint(JComponent.java:696) at javax.swing.JComponent.paintChildren(JComponent.java:498) at javax.swing.JComponent.paint(JComponent.java:696) at javax.swing.JComponent.paintChildren(JComponent.java:498) at javax.swing.JComponent.paint(JComponent.java:696) at javax.swing.JLayeredPane.paint(JLayeredPane.java:546) at javax.swing.JComponent.paintChildren(JComponent.java:498) at javax.swing.JComponent.paint(JComponent.java:696) at javax.swing.JComponent.paintChildren(JComponent.java:498) at javax.swing.JComponent.paint(JComponent.java:696) at javax.swing.JComponent.paintChildren(JComponent.java:498) at javax.swing.JComponent.paint(JComponent.java:696) at javax.swing.JLayeredPane.paint(JLayeredPane.java:546) at javax.swing.JComponent.paintChildren(JComponent.java:498) at javax.swing.JComponent.paint(JComponent.java:696) at javax.swing.JViewport.paint(JViewport.java:668) at javax.swing.JComponent.paintWithBuffer(JComponent.java:3878) at javax.swing.JComponent._paintImmediately(JComponent.java:3821) at javax.swing.JComponent.paintImmediately(JComponent.java:3672) at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:370) at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run (SystemEventQueueUtilities.java:124) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154) at java.awt.EventQueue.dispatchEvent(EventQueue.java:337) [catch] 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)
Created attachment 4712 [details] NetBeans Log File
Hi David. This looks like a duplicate of issue #19591. Please read the additional comments for the issue to see understand the problem. Also note that the latest build of mdr (mdr.nbm, mdrapi.nbm and mdrtoolkit.nbm files) is available at http://mdr.netbeans.org/servlets/ProjectDownloadList. *** This issue has been marked as a duplicate of 19591 ***