ENTRY org.eclipse.core.resources 4 2 2014-06-10 13:06:58.821
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.resources".
!STACK 0
java.lang.NullPointerException
	at org.eclipse.wst.jsdt.internal.compiler.util.HashtableOfObjectToInt.get(HashtableOfObjectToInt.java:71)
	at org.eclipse.wst.jsdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.saveNewId(JavaModelManager.java:3455)
	at org.eclipse.wst.jsdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.saveClasspathEntry(JavaModelManager.java:3409)
	at org.eclipse.wst.jsdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.saveClasspathEntries(JavaModelManager.java:3404)
	at org.eclipse.wst.jsdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.saveContainers(JavaModelManager.java:3446)
	at org.eclipse.wst.jsdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.saveProjects(JavaModelManager.java:3510)
	at org.eclipse.wst.jsdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.save(JavaModelManager.java:3338)
	at org.eclipse.wst.jsdt.internal.core.JavaModelManager.saveVariablesAndContainers(JavaModelManager.java:3241)
	at org.eclipse.wst.jsdt.internal.core.JavaModelManager.saving(JavaModelManager.java:3553)
	at org.eclipse.core.internal.resources.SaveManager.executeLifecycle(SaveManager.java:384)
	at org.eclipse.core.internal.resources.SaveManager$1.run(SaveManager.java:193)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.resources.SaveManager.broadcastLifecycle(SaveManager.java:196)
	at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1131)
	at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2364)
	at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor$5.run(IDEWorkbenchAdvisor.java:509)
	at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)