Eclipseが起動しなくなった

Eclipseが起動しなくなった。
eclipse.exeを実行しても落ちるので、ログを確認*1

エラーが発生している。
しかし、何を直せば良いのかが分からず、再インストールしようと考えている、なう。

!SESSION 2011-03-15 00:20:02.043 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_24
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=ja_JP
Framework arguments: -product org.eclipse.epp.package.java.product
Command-line arguments: -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.java.product

!ENTRY org.eclipse.ui 4 0 2011-03-15 00:20:05.042
!MESSAGE Source Provider 'org.eclipse.ui.internal.services.CurrentSelectionSourceProvider' should extend AbstractSourceProvider

!ENTRY org.eclipse.ui 4 0 2011-03-15 00:20:05.045
!MESSAGE Source Provider 'org.eclipse.ui.internal.services.ActiveShellSourceProvider' should extend AbstractSourceProvider

!ENTRY org.eclipse.ui 4 0 2011-03-15 00:20:05.047
!MESSAGE Source Provider 'org.eclipse.ui.internal.services.ActivePartSourceProvider' should extend AbstractSourceProvider

!ENTRY org.eclipse.ui 4 0 2011-03-15 00:20:05.048
!MESSAGE Source Provider 'org.eclipse.ui.internal.services.ActionSetSourceProvider' should extend AbstractSourceProvider

!ENTRY org.eclipse.ui 4 0 2011-03-15 00:20:05.049
!MESSAGE Source Provider 'org.eclipse.ui.internal.menus.FocusControlSourceProvider' should extend AbstractSourceProvider

!ENTRY org.eclipse.ui 4 0 2011-03-15 00:20:05.051
!MESSAGE Source Provider 'org.eclipse.ui.internal.services.MenuSourceProvider' should extend AbstractSourceProvider

!ENTRY org.eclipse.ui 4 0 2011-03-15 00:20:05.052
!MESSAGE Source Provider 'org.eclipse.ui.internal.contexts.ActiveContextSourceProvider' should extend AbstractSourceProvider

!ENTRY org.eclipse.ui 4 0 2011-03-15 00:20:05.067
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.ClassCastException: org.eclipse.ui.internal.handlers.HandlerServiceFactory cannot be cast to org.eclipse.ui.services.AbstractServiceFactory
at org.eclipse.ui.internal.services.WorkbenchServiceRegistry.loadFromRegistry(WorkbenchServiceRegistry.java:131)
at org.eclipse.ui.internal.services.WorkbenchServiceRegistry.getService(WorkbenchServiceRegistry.java:101)
at org.eclipse.ui.internal.services.ServiceLocator.getService(ServiceLocator.java:174)
at org.eclipse.ui.internal.Workbench$44.runWithException(Workbench.java:1698)
at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3885)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3506)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2316)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
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:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)

!ENTRY org.eclipse.rap.ui.workbench 4 0 2011-03-15 00:20:05.489
!MESSAGE
!STACK 0
org.osgi.framework.BundleException: バンドル org.eclipse.rap.ui.workbench の org.eclipse.ui.internal.WorkbenchPlugin.stop() での例外。
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:863)
at org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:474)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:546)
at org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1098)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL(StartLevelManager.java:593)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:261)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown(StartLevelManager.java:216)
at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.suspend(InternalSystemBundle.java:266)
at org.eclipse.osgi.framework.internal.core.Framework.shutdown(Framework.java:685)
at org.eclipse.osgi.framework.internal.core.Framework.close(Framework.java:583)
at org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown(EclipseStarter.java:409)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:200)
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:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
Caused by: java.lang.NullPointerException
at org.eclipse.ui.internal.WorkbenchPlugin.stop(WorkbenchPlugin.java:1330)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:843)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:836)
... 18 more
Root exception:
java.lang.NullPointerException
at org.eclipse.ui.internal.WorkbenchPlugin.stop(WorkbenchPlugin.java:1330)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:843)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:836)
at org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:474)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:546)
at org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1098)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL(StartLevelManager.java:593)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:261)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown(StartLevelManager.java:216)
at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.suspend(InternalSystemBundle.java:266)
at org.eclipse.osgi.framework.internal.core.Framework.shutdown(Framework.java:685)
at org.eclipse.osgi.framework.internal.core.Framework.close(Framework.java:583)
at org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown(EclipseStarter.java:409)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:200)
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:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)

*1:ログは、ECLIPSE_HOME\workspace\.metadata\.logにある