Mon Apr 16 19:38:49 GMT+02:00 2001: java.lang.IllegalArgumentException: Line index=-1 must be >= 0
java.lang.IllegalArgumentException: Line index=-1 must be >= 0
        at org.netbeans.editor.BaseDocument$LineRootElement.getElement(BaseDocument.java:1094)
        at org.openide.text.NbDocument.findLineOffset(NbDocument.java:115)
        at org.openide.text.PositionRef$Manager$LineKind.toMemory(PositionRef.java:513)
        at org.openide.text.PositionRef$Manager.documentOpened(PositionRef.java:241)
        at org.openide.text.CloneableEditorSupport$Listener.run(CloneableEditorSupport.java:1319)
        at org.openide.util.Task.run(Task.java:124)
        at org.openide.text.CloneableEditorSupport$1.run(CloneableEditorSupport.java:297)
        at org.openide.util.Task.run(Task.java:124)
[catch] at java.lang.Thread.run(Thread.java:484)