java.lang.IllegalStateException: NbEditorDocument.createEditor(): ui=javax.swing.plaf.synth.SynthEditorPaneUI@1656a6f, kit=javax.swing.JEditorPane$PlainEditorKit@12eb9d2, pane=org.openide.text.QuietEditorPane[,0,0,0x0,invalid,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.synth.SynthBorder@a9bcdd,flags=296,maximumSize=,minimumSize=,preferredSize=,caretColor=javax.swing.plaf.ColorUIResource[r=0,g=0,b=0],disabledTextColor=javax.swing.plaf.ColorUIResource[r=177,g=165,b=152],editable=true,margin=javax.swing.plaf.InsetsUIResource[top=3,left=3,bottom=3,right=3],selectedTextColor=javax.swing.plaf.ColorUIResource[r=26,g=26,b=26],selectionColor=javax.swing.plaf.ColorUIResource[r=250,g=209,b=132],kit=javax.swing.JEditorPane$PlainEditorKit@12eb9d2,typeHandlers=]
        at org.netbeans.modules.editor.NbEditorDocument.createEditor(NbEditorDocument.java:175)
        at org.openide.text.CloneableEditor$DoInitialize.initCustomEditor(CloneableEditor.java:497)
        at org.openide.text.CloneableEditor$DoInitialize.initVisual(CloneableEditor.java:599)
        at org.openide.text.CloneableEditor$DoInitialize.run(CloneableEditor.java:291)
        at org.netbeans.core.windows.WindowManagerImpl$Exclusive$1.run(WindowManagerImpl.java:1317)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:117)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)