STS won't start after crash possibly due to missging grails plugin ressource

[Adrian0CG]

Hi @ll!

My STS 2.5.2 won't start after it crashed during execution of a grails command.

After the splash screen, a message appears:

An error has ocurred. See the log file D:\sts-workspace_ah\.metadata\.log

An in this i have the following stacktrace:

!ENTRY org.eclipse.osgi 4 0 2011-02-17 10:26:37.766
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: org/eclipse/core/resources/IContainer
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:116)
	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:369)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1383)
Caused by: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.core.resources (169).
	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:121)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
	at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:33)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:466)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
	... 14 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:806)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:755)
	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:370)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:284)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
	at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106)
	... 23 more
Caused by: org.eclipse.core.internal.dtree.ObjectNotFoundException: Tree element '/Prosquare2/yui-2.7.0.1-src-groovy/org/codehaus/groovy/grails/plugins/yui/Yui.groovy' not found.
	at org.eclipse.core.internal.dtree.AbstractDataTree.handleNotFound(AbstractDataTree.java:257)
	at org.eclipse.core.internal.dtree.DeltaDataTree.getData(DeltaDataTree.java:585)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:50)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DeltaDataTree.asBackwardDelta(DeltaDataTree.java:88)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:816)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:792)
	at org.eclipse.core.internal.watson.ElementTree.immutable(ElementTree.java:517)
	at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:688)
	at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1503)
	at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2134)
	at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:1883)
	at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:406)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:783)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:774)
	... 29 more

It looks linke some ressources referenced are not found, but:

1. this should issue only warning, since it is nothing necessary for eclipse, but related to a grails plugin the project uses
2. I have scanned all projects .project .classpath and others for this ressource reference, but there is none.

So, how do I get rid of this?

Thanks in advance,
Adrian

[Adrian0CG]

Environment: Vista 64bit, JVM 1.6.0_20 (64bit)