Eclipse fails to start after crash

Question

Eclipse crashed and I cannot restart it. How do I recover from the crash?

Here is the .log file:

!SESSION 2013-04-22 20:12:27.799 ----------------------------------------------- eclipse.buildId=M20130204-1200 java.version=1.7.0_17 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.osgi 4 0 2013-04-22 20:12:31.146 !MESSAGE An error occurred while automatically activating bundle com.android.ide.eclipse.adt (1128). !STACK 0 org.osgi.framework.BundleException: Exception in com.android.ide.eclipse.adt.AdtPlugin.start() of bundle com.android.ide.eclipse.adt.     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)     at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)     at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)     at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)     at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)     at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)     at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)     at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:464)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)     at java.lang.ClassLoader.loadClass(Unknown Source)     at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)     at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)     at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)     at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)     at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)     at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)     at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:273)     at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52)     at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:269)     at org.eclipse.ui.internal.EarlyStartupRunnable.getExecutableExtension(EarlyStartupRunnable.java:117)     at org.eclipse.ui.internal.EarlyStartupRunnable.run(EarlyStartupRunnable.java:66)     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)     at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) Caused by: java.lang.NullPointerException     at org.eclipse.ui.plugin.AbstractUIPlugin.imageDescriptorFromPlugin(AbstractUIPlugin.java:671)     at com.android.ide.eclipse.adt.AdtPlugin.startEditors(AdtPlugin.java:1523)     at com.android.ide.eclipse.adt.AdtPlugin.start(AdtPlugin.java:264)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)     at java.security.AccessController.doPrivileged(Native Method)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)     ... 29 more Root exception: java.lang.NullPointerException     at org.eclipse.ui.plugin.AbstractUIPlugin.imageDescriptorFromPlugin(AbstractUIPlugin.java:671)     at com.android.ide.eclipse.adt.AdtPlugin.startEditors(AdtPlugin.java:1523)     at com.android.ide.eclipse.adt.AdtPlugin.start(AdtPlugin.java:264)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)     at java.security.AccessController.doPrivileged(Native Method)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)     at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)     at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)     at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)     at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)     at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)     at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)     at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:464)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)     at java.lang.ClassLoader.loadClass(Unknown Source)     at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)     at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)     at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)     at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)     at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)     at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)     at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:273)     at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52)     at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:269)     at org.eclipse.ui.internal.EarlyStartupRunnable.getExecutableExtension(EarlyStartupRunnable.java:117)     at org.eclipse.ui.internal.EarlyStartupRunnable.run(EarlyStartupRunnable.java:66)     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)     at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)  !ENTRY org.eclipse.osgi 4 0 2013-04-22 20:12:31.150 !MESSAGE An error occurred while automatically activating bundle com.android.ide.eclipse.adt (1128). !STACK 0 org.osgi.framework.BundleException: Exception in com.android.ide.eclipse.adt.AdtPlugin.start() of bundle com.android.ide.eclipse.adt.     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)     at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)     at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)     at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)     at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)     at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)     at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)     at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:464)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)     at java.lang.ClassLoader.loadClass(Unknown Source)     at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)     at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)     at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)     at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)     at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)     at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)     at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:273)     at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52)     at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:269)     at org.eclipse.ui.internal.EarlyStartupRunnable.getExecutableExtension(EarlyStartupRunnable.java:117)     at org.eclipse.ui.internal.EarlyStartupRunnable.run(EarlyStartupRunnable.java:66)     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)     at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) Caused by: java.lang.NullPointerException     at org.eclipse.ui.plugin.AbstractUIPlugin.imageDescriptorFromPlugin(AbstractUIPlugin.java:671)     at com.android.ide.eclipse.adt.AdtPlugin.startEditors(AdtPlugin.java:1523)     at com.android.ide.eclipse.adt.AdtPlugin.start(AdtPlugin.java:264)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)     at java.security.AccessController.doPrivileged(Native Method)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)     ... 29 more Root exception: java.lang.NullPointerException     at org.eclipse.ui.plugin.AbstractUIPlugin.imageDescriptorFromPlugin(AbstractUIPlugin.java:671)     at com.android.ide.eclipse.adt.AdtPlugin.startEditors(AdtPlugin.java:1523)     at com.android.ide.eclipse.adt.AdtPlugin.start(AdtPlugin.java:264)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)     at java.security.AccessController.doPrivileged(Native Method)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)     at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)     at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)     at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)     at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)     at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)     at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)     at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:464)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)     at java.lang.ClassLoader.loadClass(Unknown Source)     at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)     at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)     at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)     at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)     at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)     at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)     at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:273)     at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52)     at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:269)     at org.eclipse.ui.internal.EarlyStartupRunnable.getExecutableExtension(EarlyStartupRunnable.java:117)     at org.eclipse.ui.internal.EarlyStartupRunnable.run(EarlyStartupRunnable.java:66)     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)     at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)  !ENTRY org.eclipse.ui 4 0 2013-04-22 20:12:31.153 !MESSAGE Error occurred during status handling !STACK 0 java.lang.NullPointerException     at org.eclipse.ui.internal.statushandlers.StatusHandlerRegistry.<init>(StatusHandlerRegistry.java:72)     at org.eclipse.ui.internal.statushandlers.StatusHandlerRegistry.getDefault(StatusHandlerRegistry.java:91)     at org.eclipse.ui.statushandlers.StatusManager.getStatusHandler(StatusManager.java:135)     at org.eclipse.ui.statushandlers.StatusManager.handle(StatusManager.java:189)     at org.eclipse.ui.statushandlers.StatusManager.handle(StatusManager.java:231)     at org.eclipse.ui.statushandlers.StatusManager$StatusManagerLogListener.logging(StatusManager.java:305)     at org.eclipse.core.internal.runtime.RuntimeLog.logToListeners(RuntimeLog.java:160)     at org.eclipse.core.internal.runtime.PlatformLogWriter.logged(PlatformLogWriter.java:100)     at org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.safeLogged(ExtendedLogReaderServiceFactory.java:86)     at org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.logPrivileged(ExtendedLogReaderServiceFactory.java:205)     at org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.log(ExtendedLogReaderServiceFactory.java:178)     at org.eclipse.equinox.log.internal.ExtendedLogServiceFactory.log(ExtendedLogServiceFactory.java:65)     at org.eclipse.equinox.log.internal.ExtendedLogServiceImpl.log(ExtendedLogServiceImpl.java:87)     at org.eclipse.equinox.log.internal.LoggerImpl.log(LoggerImpl.java:54)     at org.eclipse.core.runtime.internal.adaptor.EclipseLogFactory$1.log(EclipseLogFactory.java:53)     at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:125)     at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)     at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)     at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:464)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)     at java.lang.ClassLoader.loadClass(Unknown Source)     at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)     at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)     at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)     at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)     at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)     at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)     at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:273)     at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52)     at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:269)     at org.eclipse.ui.internal.EarlyStartupRunnable.getExecutableExtension(EarlyStartupRunnable.java:117)     at org.eclipse.ui.internal.EarlyStartupRunnable.run(EarlyStartupRunnable.java:66)     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)     at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)  !ENTRY org.eclipse.ui.workbench 4 2 2013-04-22 20:12:31.155 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench". !STACK 1 org.eclipse.core.runtime.CoreException: Plug-in com.android.ide.eclipse.adt was unable to load class com.android.ide.eclipse.adt.internal.welcome.AdtStartup.     at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:194)     at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:176)     at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)     at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)     at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)     at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:273)     at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52)     at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:269)     at org.eclipse.ui.internal.EarlyStartupRunnable.getExecutableExtension(EarlyStartupRunnable.java:117)     at org.eclipse.ui.internal.EarlyStartupRunnable.run(EarlyStartupRunnable.java:66)     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)     at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) Caused by: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle com.android.ide.eclipse.adt (1128).     at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)     at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)     at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)     at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:464)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)     at java.lang.ClassLoader.loadClass(Unknown Source)     at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)     at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)     at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)     ... 11 more Caused by: org.osgi.framework.BundleException: Exception in com.android.ide.eclipse.adt.AdtPlugin.start() of bundle com.android.ide.eclipse.adt.     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)     at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)     at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)     at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)     at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)     ... 23 more Caused by: java.lang.NullPointerException     at org.eclipse.ui.plugin.AbstractUIPlugin.imageDescriptorFromPlugin(AbstractUIPlugin.java:671)     at com.android.ide.eclipse.adt.AdtPlugin.startEditors(AdtPlugin.java:1523)     at com.android.ide.eclipse.adt.AdtPlugin.start(AdtPlugin.java:264)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)     at java.security.AccessController.doPrivileged(Native Method)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)     ... 29 more !SUBENTRY 1 org.eclipse.equinox.registry 4 1 2013-04-22 20:12:31.156 !MESSAGE Plug-in com.android.ide.eclipse.adt was unable to load class com.android.ide.eclipse.adt.internal.welcome.AdtStartup. !STACK 0 org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle com.android.ide.eclipse.adt (1128).     at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)     at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)     at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)     at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:464)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)     at java.lang.ClassLoader.loadClass(Unknown Source)     at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)     at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)     at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)     at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)     at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)     at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)     at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:273)     at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52)     at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:269)     at org.eclipse.ui.internal.EarlyStartupRunnable.getExecutableExtension(EarlyStartupRunnable.java:117)     at org.eclipse.ui.internal.EarlyStartupRunnable.run(EarlyStartupRunnable.java:66)     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)     at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) Caused by: org.osgi.framework.BundleException: Exception in com.android.ide.eclipse.adt.AdtPlugin.start() of bundle com.android.ide.eclipse.adt.     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)     at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)     at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)     at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)     at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)     at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)     ... 23 more Caused by: java.lang.NullPointerException     at org.eclipse.ui.plugin.AbstractUIPlugin.imageDescriptorFromPlugin(AbstractUIPlugin.java:671)     at com.android.ide.eclipse.adt.AdtPlugin.startEditors(AdtPlugin.java:1523)     at com.android.ide.eclipse.adt.AdtPlugin.start(AdtPlugin.java:264)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)     at java.security.AccessController.doPrivileged(Native Method)     at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)     ... 29 more !SUBENTRY 1 org.eclipse.equinox.registry 4 1 2013-04-22 20:12:31.156 !MESSAGE Plug-in com.android.ide.eclipse.adt was unable to load class com.android.ide.eclipse.adt.internal.welcome.AdtStartup. !STACK 0 org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle com.android.ide.eclipse.adt (1128).     at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)     at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)     at  

Edit: I tried starting with -clean but it didn't fix it.

Answer 1

I had a similar crash and starting eclipse with -clean option did not help. I ended up deleting .metadata\.plugins\org.eclipse.e4.workbench file, which fixed this problem.