java.lang.ClassCastException: org.netbeans.modules.debugger.jpda.projects.ConstantPool$EntryNULL cannot be cast to org.netbeans.modules.debugger.jpda.projects.ConstantPool$EntryNameType
   at org.netbeans.modules.debugger.jpda.projects.ConstantPool.getMethodName(ConstantPool.java:90)
   at org.netbeans.modules.debugger.jpda.projects.AST2Bytecode.matchSourceTree2Bytecode(AST2Bytecode.java:153)
   at org.netbeans.modules.debugger.jpda.projects.EditorContextImpl.computeOperations(EditorContextImpl.java:2634)
   at org.netbeans.modules.debugger.jpda.projects.EditorContextImpl.getOperations(EditorContextImpl.java:1726)
   at org.netbeans.modules.debugger.jpda.ExpressionPool.createExpressionAt(ExpressionPool.java:186)
   at org.netbeans.modules.debugger.jpda.ExpressionPool.getExpressionAt(ExpressionPool.java:102)
   at org.netbeans.modules.debugger.jpda.actions.MethodChooserSupport.init(MethodChooserSupport.java:221)
   at org.netbeans.modules.debugger.jpda.actions.StepIntoActionProvider.doMethodSelection(StepIntoActionProvider.java:197)
   at org.netbeans.modules.debugger.jpda.actions.StepIntoActionProvider.runAction(StepIntoActionProvider.java:138)
   at org.netbeans.modules.debugger.jpda.actions.StepIntoActionProvider$1.run(StepIntoActionProvider.java:129)
   at org.netbeans.modules.debugger.jpda.actions.JPDADebuggerActionProvider$1.run(JPDADebuggerActionProvider.java:198)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2043)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.ClassCastException: org.netbeans.modules.debugger.jpda.projects.ConstantPool$EntryNULL cannot be cast to org.netbeans.modules.debugger.jpda.projects.ConstantPool$EntryNameType
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:424)
   at org.netbeans.modules.debugger.jpda.actions.JPDADebuggerActionProvider.doLazyAction(JPDADebuggerActionProvider.java:192)
   at org.netbeans.modules.debugger.jpda.actions.StepIntoActionProvider.postAction(StepIntoActionProvider.java:126)
   at org.netbeans.spi.debugger.ActionsProvider$ContextAware.postAction(ActionsProvider.java:257)
   at org.netbeans.api.debugger.ActionsManager.postAction(ActionsManager.java:241)
   at org.netbeans.modules.debugger.ui.actions.DebuggerAction.actionPerformed(DebuggerAction.java:104)
   at org.openide.windows.TopComponent.processKeyBinding(TopComponent.java:1176)
   at javax.swing.JComponent.processKeyBindings(JComponent.java:2941)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2843)
   at java.awt.Component.processEvent(Component.java:6290)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4869)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4691)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1953)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:796)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1056)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:931)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:761)
   at java.awt.Component.dispatchEventImpl(Component.java:4740)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4691)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:722)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:681)
   at java.awt.EventQueue$3.run(EventQueue.java:679)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:695)
   at java.awt.EventQueue$4.run(EventQueue.java:693)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:692)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)