Eclipse won't work after my PC shutdown unexpectedly. Here is the error that corresponds to the log file written when I tried to run Eclipse.
!SESSION 2014-08-20 14:05:14.763 -----------------------------------------------
eclipse.buildId=4.3.0.M20130911-1000
java.version=1.7.0_45
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Framework arguments: -product org.eclipse.epp.package.jee.product
Command-line arguments: -os win32 -ws win32 -arch x86 -product
org.eclipse.epp.package.jee.product
!ENTRY org.eclipse.osgi 4 0 2014-08-20 14:05:18.319
!MESSAGE An error occurred while automatically activating bundle
org.eclipse.core.resources (82).
!STACK 0
org.osgi.framework.BundleException: Exception in org.eclipse.core.resources.ResourcesPlugin.start() of bundle org.eclipse.core.resources.
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:478)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:109)
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.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
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.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:125)
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:354)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
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:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
Caused by: org.eclipse.core.internal.resources.ResourceException: Problems reading project tree.
at org.eclipse.core.internal.resources.WorkspaceTreeReader_2.readTree(WorkspaceTreeReader_2.java:125)
at org.eclipse.core.internal.resources.SaveManager.restoreTree(SaveManager.java:1000)
at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:687)
at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1530)
at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2503)
at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2252)
at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:439)
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)
... 28 more
Caused by: java.io.IOException: Unknown format.
at org.eclipse.core.internal.watson.ElementTreeReader.getReader(ElementTreeReader.java:76)
at org.eclipse.core.internal.watson.ElementTreeReader.readDelta(ElementTreeReader.java:85)
at org.eclipse.core.internal.watson.ElementTreeReaderImpl_1.readDeltaChain(ElementTreeReaderImpl_1.java:88)
at org.eclipse.core.internal.watson.ElementTreeReader.readDeltaChain(ElementTreeReader.java:110)
at org.eclipse.core.internal.resources.WorkspaceTreeReader_1.readTrees(WorkspaceTreeReader_1.java:233)
at org.eclipse.core.internal.resources.WorkspaceTreeReader_2.readTree(WorkspaceTreeReader_2.java:104)
... 37 more
Root exception:
org.eclipse.core.internal.resources.ResourceException(null)[567]: java.io.IOException: Unknown format.
at org.eclipse.core.internal.watson.ElementTreeReader.getReader(ElementTreeReader.java:76)
at org.eclipse.core.internal.watson.ElementTreeReader.readDelta(ElementTreeReader.java:85)
at org.eclipse.core.internal.watson.ElementTreeReaderImpl_1.readDeltaChain(ElementTreeReaderImpl_1.java:88)
at org.eclipse.core.internal.watson.ElementTreeReader.readDeltaChain(ElementTreeReader.java:110)
at org.eclipse.core.internal.resources.WorkspaceTreeReader_1.readTrees(WorkspaceTreeReader_1.java:233)
at org.eclipse.core.internal.resources.WorkspaceTreeReader_2.readTree(WorkspaceTreeReader_2.java:104)
at org.eclipse.core.internal.resources.SaveManager.restoreTree(SaveManager.java:1000)
at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:687)
at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1530)
at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2503)
at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2252)
at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:439)
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:478)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:109)
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.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
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.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:125)
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:354)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
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:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
!ENTRY org.eclipse.osgi 4 0 2014-08-20 14:05:18.336
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: org/eclipse/core/resources/IContainer
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:125)
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:354)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
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:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
Caused by: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.core.resources (82).
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:124)
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.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
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)
... 13 more
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.core.resources.ResourcesPlugin.start() of bundle org.eclipse.core.resources.
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:478)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:109)
... 22 more
Caused by: org.eclipse.core.internal.resources.ResourceException: Problems reading project tree.
at org.eclipse.core.internal.resources.WorkspaceTreeReader_2.readTree(WorkspaceTreeReader_2.java:125)
at org.eclipse.core.internal.resources.SaveManager.restoreTree(SaveManager.java:1000)
at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:687)
at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1530)
at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2503)
at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2252)
at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:439)
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)
... 28 more
Caused by: java.io.IOException: Unknown format.
at org.eclipse.core.internal.watson.ElementTreeReader.getReader(ElementTreeReader.java:76)
at org.eclipse.core.internal.watson.ElementTreeReader.readDelta(ElementTreeReader.java:85)
at org.eclipse.core.internal.watson.ElementTreeReaderImpl_1.readDeltaChain(ElementTreeReaderImpl_1.java:88)
at org.eclipse.core.internal.watson.ElementTreeReader.readDeltaChain(ElementTreeReader.java:110)
at org.eclipse.core.internal.resources.WorkspaceTreeReader_1.readTrees(WorkspaceTreeReader_1.java:233)
at org.eclipse.core.internal.resources.WorkspaceTreeReader_2.readTree(WorkspaceTreeReader_2.java:104)
... 37 more
If you've "installed" Eclipse but are having trouble getting it to run, the most likely cause is that you have not correctly specified the JVM for it to run under. You may need to edit the eclipse. ini file. Another common mistake on Microsoft Windows is a mismatch between the "bittedness" of Eclipse and the JVM/JDK.
You need to open the eclipse Markers view ( Window->Show View->Markers ), it will show all errors about your project, if you correct all the errors, your problem will most likely be solved. Save this answer.
Try changing the workspace if that works. To force change workspace prompt, make following change.
<Eclipse_root_dir>\configuration\.settings\org.eclipse.ui.ide.prefs and set SHOW_WORKSPACE_SELECTION_DIALOG to true
If that works, go to workspace\.metadata\.plugins\org.eclipse.core.resources and delete .snap file.
If #2 does not work, try deleting workspace\.metadata\.plugins\org.eclipse.core.resources folder. Make sure you back it up, just in case it is needed in future.
After about 30-45 minutes of heat n trials i found out there was a file in %eclipse_workspace%.metadata.plugins\org.eclipse.core.resources.root by extension ".tree". I removed it and it i could restart eclipse. Though all projects in my workspace got deleted
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