java.lang.IllegalStateException: Annotation not added: BreakpointLine Breakpoint
   at org.netbeans.modules.editor.NbEditorDocument.removeAnnotation(NbEditorDocument.java:257)
   at org.openide.text.NbDocument.removeAnnotation(NbDocument.java:533)
   at org.openide.text.DocumentLine$2.run(DocumentLine.java:378)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1390)
   at org.openide.text.DocumentLine.removeAnnotation(DocumentLine.java:373)
   at org.openide.text.Annotation.detach(Annotation.java:136)
   at org.netbeans.modules.debugger.jpda.projects.BreakpointAnnotationProvider.removeAnnotations(BreakpointAnnotationProvider.java:577)
   at org.netbeans.modules.debugger.jpda.projects.BreakpointAnnotationProvider.access$200(BreakpointAnnotationProvider.java:102)
   at org.netbeans.modules.debugger.jpda.projects.BreakpointAnnotationProvider$AnnotationRefresh.refreshAnnotation(BreakpointAnnotationProvider.java:316)
   at org.netbeans.modules.debugger.jpda.projects.BreakpointAnnotationProvider$AnnotationRefresh.run(BreakpointAnnotationProvider.java:305)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.IllegalStateException: Annotation not added: BreakpointLine Breakpoint
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:424)
   at org.netbeans.modules.debugger.jpda.projects.BreakpointAnnotationProvider.propertyChange(BreakpointAnnotationProvider.java:261)
   at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)
   at org.netbeans.api.debugger.Breakpoint.firePropertyChange(Breakpoint.java:379)
   at org.netbeans.api.debugger.Breakpoint.setValidity(Breakpoint.java:150)
   at org.netbeans.api.debugger.jpda.LineBreakpoint$LineBreakpointImpl.stateChanged(LineBreakpoint.java:556)
   at org.netbeans.modules.debugger.jpda.breakpoints.BreakpointImpl.setValidity(BreakpointImpl.java:197)
   at org.netbeans.modules.debugger.jpda.breakpoints.BreakpointImpl.remove(BreakpointImpl.java:238)
   at org.netbeans.modules.debugger.jpda.breakpoints.ClassBasedBreakpoint.remove(ClassBasedBreakpoint.java:183)
   at org.netbeans.modules.debugger.jpda.breakpoints.BreakpointsEngineListener.removeBreakpointImpl(BreakpointsEngineListener.java:401)
   at org.netbeans.modules.debugger.jpda.breakpoints.BreakpointsEngineListener.removeBreakpointImpls(BreakpointsEngineListener.java:275)
   at org.netbeans.modules.debugger.jpda.breakpoints.BreakpointsEngineListener.propertyChange(BreakpointsEngineListener.java:149)
   at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:328)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.firePropertyChange(JPDADebuggerImpl.java:2058)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.setState(JPDADebuggerImpl.java:2042)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.finish(JPDADebuggerImpl.java:1396)
   at org.netbeans.modules.debugger.jpda.actions.StartActionProvider$4.run(StartActionProvider.java:281)
   at org.netbeans.modules.debugger.jpda.util.Operator$1.run(Operator.java:268)
   at java.lang.Thread.run(Thread.java:724)