위 스샷처럼 에러 발생 로그 파일을 보세요 ㅠㅠ 이래요 ㅠㅠ


로그 파일을 보면


!ENTRY org.eclipse.osgi 4 0 2010-10-16 17:16:28.624
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: org/eclipse/core/resources/IContainer
 at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:114)
 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)
Caused by: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.core.resources (39).
 at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:125)
 at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:449)
 at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:211)
 at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:381)
 at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:33)
 at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:454)
 at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
 at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:398)
 at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:105)
 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:806)
 at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:755)
 at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:352)
 at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:280)
 at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:408)
 at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:111)
 ... 22 more
Caused by: org.eclipse.core.internal.dtree.ObjectNotFoundException: Tree element '/SolveTheQuiz2/bin/net/solve/thequiz/R.class' 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.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
 at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
 at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
 at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
 at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
 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:792)
 at org.eclipse.core.internal.watson.ElementTree.immutable(ElementTree.java:517)
 at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:670)
 at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1353)
 at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:1957)
 at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:1716)
 at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:379)
 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)
 ... 27 more


로그파일 내용인데 ㅠㅠ 으악 이클립스 다시 깔아야 되는건가요 ㅠㅠ
그동안 했엇던 작업이 다 날라가는데 ㅠㅠ

흐미 ㅠㅠ 제발 도와주세요 ㅠㅠ