javax.jmi.reflect.InvalidObjectException: Object with MOFID C604DE13-0135-11D9-B918-AC2DED21AA77:00000000000011FD no longer exists.
	at org.netbeans.mdr.handlers.BaseObjectHandler._getDelegate(BaseObjectHandler.java:322)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.JavaClassImpl.getSuperclassRef(JavaClassImpl.java:949)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.JavaClassImpl.getSuperClass(JavaClassImpl.java:285)
	at org.netbeans.jmi.javamodel.JavaClass$Impl.getSuperClass(Unknown Source)
	at org.netbeans.modules.javacore.parser.MDRParser.getSuperClass(MDRParser.java:1408)
	at org.netbeans.modules.javacore.parser.Scope.constructMemberTypeScope(Scope.java:135)
	at org.netbeans.modules.javacore.parser.Scope.createMemberTypeScope(Scope.java:123)
	at org.netbeans.modules.javacore.parser.Scope.constructMemberTypeScope(Scope.java:140)
	at org.netbeans.modules.javacore.parser.Scope.createMemberTypeScope(Scope.java:123)
	at org.netbeans.modules.javacore.parser.Scope.constructMemberTypeScope(Scope.java:140)
	at org.netbeans.modules.javacore.parser.Scope.createMemberTypeScope(Scope.java:123)
	at org.netbeans.modules.javacore.parser.MDRParser.processAST(MDRParser.java:441)
	at org.netbeans.modules.javacore.parser.MDRParser.processAST(MDRParser.java:363)
	at org.netbeans.modules.javacore.parser.MDRParser.processAST(MDRParser.java:449)
	at org.netbeans.modules.javacore.parser.MDRParser.processAST(MDRParser.java:331)
	at org.netbeans.modules.javacore.parser.MDRParser.processAST(MDRParser.java:293)
	at org.netbeans.modules.javacore.parser.MDRParser.processAST(MDRParser.java:270)
	at org.netbeans.modules.javacore.parser.MDRParser.enterMembers(MDRParser.java:210)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.directUpdate(ResourceImpl.java:553)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.checkUpToDate(ResourceImpl.java:479)
	at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.updateFromDataObject(ResourceImpl.java:385)
	at org.netbeans.modules.javacore.ExclusiveMutex.parseIfNeeded(ExclusiveMutex.java:218)
	at org.netbeans.modules.javacore.ExclusiveMutex.enter(ExclusiveMutex.java:137)
	at org.netbeans.mdr.NBMDRepositoryImpl.beginTrans(NBMDRepositoryImpl.java:232)
	at org.netbeans.modules.javacore.internalapi.UndoManager.parseModified(UndoManager.java:489)
	at org.netbeans.modules.javacore.internalapi.UndoManager.transactionEnded(UndoManager.java:128)
	at org.netbeans.modules.javacore.internalapi.UndoManager.undo(UndoManager.java:183)
	at org.netbeans.test.refactoring.rename.RenameTestCase.renamePackage(RenameTestCase.java:121)
	at org.netbeans.test.refactoring.rename.SimpleTest.testUndoRenamePackage1(SimpleTest.java:153)