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:381)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1383)
   at org.openide.text.DocumentLine.removeAnnotation(DocumentLine.java:376)
   at org.openide.text.Annotation.detach(Annotation.java:136)
   at org.netbeans.modules.debugger.jpda.projects.BreakpointAnnotationProvider.removeAnnotations(BreakpointAnnotationProvider.java:506)
   at org.netbeans.modules.debugger.jpda.projects.BreakpointAnnotationProvider.access$200(BreakpointAnnotationProvider.java:96)
   at org.netbeans.modules.debugger.jpda.projects.BreakpointAnnotationProvider$AnnotationRefresh.run(BreakpointAnnotationProvider.java:245)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2048)