java.lang.NullPointerException
   at org.netbeans.api.debugger.DebuggerManager.refreshDebuggerManagerListeners(DebuggerManager.java:1529)
   at org.netbeans.api.debugger.DebuggerManager.initDebuggerManagerListeners(DebuggerManager.java:1504)
   at org.netbeans.api.debugger.DebuggerManager.initBreakpoints(DebuggerManager.java:990)
   at org.netbeans.api.debugger.DebuggerManager.initBreakpoints(DebuggerManager.java:959)
   at org.netbeans.api.debugger.DebuggerManager.getBreakpoints(DebuggerManager.java:597)
   at org.netbeans.modules.debugger.jpda.projects.BreakpointAnnotationProvider.annotate(BreakpointAnnotationProvider.java:158)
   at org.netbeans.modules.debugger.jpda.projects.BreakpointAnnotationProvider.annotate(BreakpointAnnotationProvider.java:147)
   at org.openide.text.CloneableEditorSupport.ensureAnnotationsLoaded(CloneableEditorSupport.java:392)
   at org.openide.text.CloneableEditorInitializer.initAnnotations(CloneableEditorInitializer.java:634)
   at org.openide.text.CloneableEditorInitializer.run(CloneableEditorInitializer.java:351)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)