java.lang.ClassCastException: org.openide.filesystems.MultiFileObject$VoidValue cannot be cast to java.lang.String
        at org.netbeans.modules.editor.settings.storage.EditorSettingsImpl.getCurrentFontColorProfile(EditorSettingsImpl.java:233)
        at org.netbeans.modules.editor.settings.storage.SettingsProvider$MyLookup.<init>(SettingsProvider.java:155)
        at org.netbeans.modules.editor.settings.storage.SettingsProvider$MyLookup.<init>(SettingsProvider.java:145)
        at org.netbeans.modules.editor.settings.storage.SettingsProvider.getLookup(SettingsProvider.java:120)
        at org.netbeans.modules.editor.mimelookup.MimePathLookup.rebuild(MimePathLookup.java:101)
        at org.netbeans.modules.editor.mimelookup.MimePathLookup.<init>(MimePathLookup.java:89)
        at org.netbeans.api.editor.mimelookup.MimePath.getLookup(MimePath.java:509)
        at org.netbeans.api.editor.mimelookup.MimeLookup.getLookup(MimeLookup.java:112)
        at org.netbeans.modules.editor.lib.ColoringMap.findLegacyNonTokenColoringNames(ColoringMap.java:356)
        at org.netbeans.modules.editor.lib.ColoringMap.getInternal(ColoringMap.java:193)
        at org.netbeans.modules.editor.lib.ColoringMap.get(ColoringMap.java:87)
        at org.netbeans.editor.EditorUI.getCMInternal(EditorUI.java:725)
        at org.netbeans.editor.EditorUI.updateLineHeight(EditorUI.java:763)
        at org.netbeans.editor.EditorUI.initLineHeight(EditorUI.java:324)
        at org.netbeans.editor.BaseTextUI.getEditorUI(BaseTextUI.java:389)
        at org.netbeans.editor.BaseTextUI.installUI(BaseTextUI.java:219)
        at javax.swing.JComponent.setUI(JComponent.java:673)
        at javax.swing.text.JTextComponent.setUI(JTextComponent.java:322)
        at org.netbeans.editor.BaseKit.install(BaseKit.java:676)
        at javax.swing.JEditorPane.setEditorKit(JEditorPane.java:1096)
        at org.netbeans.modules.java.editor.JavaEditorWarmUpTask.run(JavaEditorWarmUpTask.java:165)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:177)
        at java.awt.Dialog$1.run(Dialog.java:1039)
        at java.awt.Dialog$3.run(Dialog.java:1091)
        at java.security.AccessController.doPrivileged(AccessController.java:0)
        at java.awt.Dialog.show(Dialog.java:1089)
        at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:834)
        at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:868)
        at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:856)
        at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:104)
        at org.openide.util.Mutex$1AWTWorker.run(Mutex.java:1238)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)