title: Error in eclipse juno upon opening
body: <p>After having Eclipse installed and working fine for over a year, I opened up Eclipse Juno today and got a error message on opening the workspace. I am using Windows 8 64-bit, Java 64-bit, and Eclipse 64-bit.  I have since tried re-installing Java and Eclipse without any effect. If anyone can help me get Eclipse working it would be much appreciated. The error log is as follows:</p>
  
  <pre><code>!SESSION 2013-06-08 16:46:09.718 -----------------------------------------------
  eclipse.buildId=M20130204-1200
  java.version=1.7.0_21
  java.vendor=Oracle Corporation
  BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
  Framework arguments:  -product org.eclipse.epp.package.java.product
  Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.java.product
  
  !ENTRY org.eclipse.core.resources 2 10035 2013-06-08 16:46:11.617
  !MESSAGE The workspace exited with unsaved changes in the previous session; refreshing workspace to recover changes.
  
  !ENTRY org.eclipse.ui 4 4 2013-06-08 16:46:14.621
  !MESSAGE An internal error has occurred.
  !STACK 0
  java.lang.NullPointerException
      at org.eclipse.ui.internal.Workbench.createWorkbenchWindow(Workbench.java:1232)
      at org.eclipse.ui.internal.Workbench.getActiveWorkbenchWindow(Workbench.java:1225)
      at org.eclipse.mylyn.internal.builds.ui.BuildsStartup$1.runInUIThread(BuildsStartup.java:39)
      at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:95)
      at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
      at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
      at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4144)
      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
      at org.eclipse.swt.widgets.Display.release(Display.java:3814)
      at org.eclipse.swt.graphics.Device.dispose(Device.java:295)
      at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:140)
      at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      at java.lang.reflect.Method.invoke(Unknown Source)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
      at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
  
  !ENTRY org.eclipse.ui.workbench 4 0 2013-06-08 16:46:14.624
  !MESSAGE An unexpected exception was thrown.
  !STACK 0
  java.lang.NullPointerException
      at org.eclipse.ui.internal.Workbench.createWorkbenchWindow(Workbench.java:1232)
      at org.eclipse.ui.internal.Workbench.getActiveWorkbenchWindow(Workbench.java:1225)
      at org.eclipse.ui.internal.services.WorkbenchSourceProvider.updateActiveShell(WorkbenchSourceProvider.java:924)
      at org.eclipse.ui.internal.services.WorkbenchSourceProvider.getCurrentState(WorkbenchSourceProvider.java:133)
      at org.eclipse.ui.internal.services.WorkbenchSourceProvider$6.handleEvent(WorkbenchSourceProvider.java:684)
      at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
      at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1262)
      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1052)
      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077)
      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1058)
      at org.eclipse.swt.widgets.Decorations.WM_ACTIVATE(Decorations.java:1664)
      at org.eclipse.swt.widgets.Shell.WM_ACTIVATE(Shell.java:2145)
      at org.eclipse.swt.widgets.Control.windowProc(Control.java:4525)
      at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:341)
      at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1627)
      at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2069)
      at org.eclipse.swt.widgets.Display.windowProc(Display.java:4976)
      at org.eclipse.swt.internal.win32.OS.BringWindowToTop(Native Method)
      at org.eclipse.swt.widgets.Decorations.bringToTop(Decorations.java:231)
      at org.eclipse.swt.widgets.Shell.open(Shell.java:1217)
      at org.eclipse.jface.window.Window.open(Window.java:797)
      at org.eclipse.ui.internal.statushandlers.InternalDialog.open(InternalDialog.java:327)
      at org.eclipse.ui.internal.statushandlers.WorkbenchStatusDialogManagerImpl.doAddStatusAdapter(WorkbenchStatusDialogManagerImpl.java:270)
      at org.eclipse.ui.internal.statushandlers.WorkbenchStatusDialogManagerImpl.addStatusAdapter(WorkbenchStatusDialogManagerImpl.java:197)
      at org.eclipse.ui.statushandlers.WorkbenchStatusDialogManager.addStatusAdapter(WorkbenchStatusDialogManager.java:156)
      at org.eclipse.ui.statushandlers.WorkbenchErrorHandler.showStatusAdapter(WorkbenchErrorHandler.java:101)
      at org.eclipse.ui.statushandlers.WorkbenchErrorHandler.handle(WorkbenchErrorHandler.java:57)
      at org.eclipse.ui.internal.ide.IDEWorkbenchErrorHandler.handle(IDEWorkbenchErrorHandler.java:108)
      at org.eclipse.ui.internal.WorkbenchErrorHandlerProxy.handle(WorkbenchErrorHandlerProxy.java:36)
      at org.eclipse.ui.statushandlers.StatusManager.handle(StatusManager.java:189)
      at org.eclipse.ui.internal.progress.ProgressManager$2.done(ProgressManager.java:467)
      at org.eclipse.core.internal.jobs.JobListeners$3.notify(JobListeners.java:39)
      at org.eclipse.core.internal.jobs.JobListeners.doNotify(JobListeners.java:96)
      at org.eclipse.core.internal.jobs.JobListeners.done(JobListeners.java:152)
      at org.eclipse.core.internal.jobs.JobManager.endJob(JobManager.java:647)
      at org.eclipse.core.internal.jobs.InternalJob.done(InternalJob.java:208)
      at org.eclipse.core.runtime.jobs.Job.done(Job.java:226)
      at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:108)
      at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
      at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
      at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4144)
      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
      at org.eclipse.swt.widgets.Display.release(Display.java:3814)
      at org.eclipse.swt.graphics.Device.dispose(Device.java:295)
      at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:140)
      at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      at java.lang.reflect.Method.invoke(Unknown Source)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
      at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
  
  !ENTRY org.eclipse.ui 4 4 2013-06-08 16:46:14.632
  !MESSAGE An internal error has occurred.
  !STACK 0
  java.lang.NullPointerException
      at org.eclipse.ui.internal.Workbench.createWorkbenchWindow(Workbench.java:1232)
      at org.eclipse.ui.internal.Workbench.getActiveWorkbenchWindow(Workbench.java:1225)
      at org.eclipse.mylyn.internal.builds.ui.BuildsStartup$1.runInUIThread(BuildsStartup.java:39)
      at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:95)
      at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
      at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
      at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4144)
      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
      at org.eclipse.swt.widgets.Display.release(Display.java:3814)
      at org.eclipse.swt.graphics.Device.dispose(Device.java:295)
      at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:140)
      at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      at java.lang.reflect.Method.invoke(Unknown Source)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
      at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
  
  !ENTRY org.eclipse.osgi 4 0 2013-06-08 16:46:14.996
  !MESSAGE Application error
  !STACK 1
  org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NullPointerException)
      at org.eclipse.swt.SWT.error(SWT.java:4361)
      at org.eclipse.swt.SWT.error(SWT.java:4276)
      at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:138)
      at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4144)
      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
      at org.eclipse.swt.widgets.Display.release(Display.java:3814)
      at org.eclipse.swt.graphics.Device.dispose(Device.java:295)
      at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:140)
      at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      at java.lang.reflect.Method.invoke(Unknown Source)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
      at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
  Caused by: java.lang.NullPointerException
      at org.eclipse.ui.internal.Workbench.createWorkbenchWindow(Workbench.java:1232)
      at org.eclipse.ui.internal.Workbench.getActiveWorkbenchWindow(Workbench.java:1225)
      at org.eclipse.mylyn.internal.monitor.ui.ActivityContextManager$3.run(ActivityContextManager.java:106)
      at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
      at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
      ... 18 more
  
  !ENTRY org.eclipse.mylyn.monitor.ui 4 0 2013-06-08 16:46:15.867
  !MESSAGE Monitor UI stop failed
  !STACK 0
  java.lang.NullPointerException
      at org.eclipse.mylyn.internal.monitor.ui.ActivityContextManager.stop(ActivityContextManager.java:152)
      at org.eclipse.mylyn.internal.monitor.ui.MonitorUiPlugin.stop(MonitorUiPlugin.java:157)
      at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:771)
      at java.security.AccessController.doPrivileged(Native Method)
      at org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:764)
      at org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:510)
      at org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:566)
      at org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1206)
      at org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL(StartLevelManager.java:592)
      at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:257)
      at org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown(StartLevelManager.java:215)
      at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.suspend(InternalSystemBundle.java:284)
      at org.eclipse.osgi.framework.internal.core.Framework.shutdown(Framework.java:692)
      at org.eclipse.osgi.framework.internal.core.Framework.close(Framework.java:600)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown(EclipseStarter.java:399)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:199)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      at java.lang.reflect.Method.invoke(Unknown Source)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
      at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.612
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.AbstractWorkingSetManager$9
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.613
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.AbstractWorkingSetManager$9
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.614
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.AbstractWorkingSetManager$9
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.614
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.AbstractWorkingSetManager$9
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.615
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.AbstractWorkingSetManager$9
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.615
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.epp.internal.mpc.ui.wizards.MarketplaceDropAdapter$1
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.616
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.AbstractWorkingSetManager$9
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.616
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin$TasksUiInitializationJob
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.617
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.AbstractWorkingSetManager$9
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.617
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.AbstractWorkingSetManager$9
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.618
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.AbstractWorkingSetManager$9
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.618
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.core.internal.registry.osgi.ExtensionEventDispatcherJob
  
  !ENTRY org.eclipse.core.jobs 2 2 2013-06-08 16:46:16.619
  !MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.AbstractWorkingSetManager$9
  </code></pre>