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java.lang.NullPointerException: null at net.sf.jabref.gui.AbstractView.getView(AbstractView.java:25)[JabRef-3.8.1-dev--snapshot--2016-12-22--groupsRework--69951e8.jar:?] at net.sf.jabref.gui.help.AboutDialogView.show(AboutDialogView.java:15)[JabRef-3.8.1-dev--snapshot--2016-12-22--groupsRework--69951e8.jar:?] at net.sf.jabref.gui.help.AboutAction.lambda$actionPerformed$0(AboutAction.java:22)[JabRef-3.8.1-dev--snapshot--2016-12-22--groupsRework--69951e8.jar:?] at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)[jfxrt.jar:?] at java.security.AccessController.doPrivileged(Native Method)[?:1.8.0_111] at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)[jfxrt.jar:?] at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)[jfxrt.jar:?] at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)[jfxrt.jar:?] at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)[jfxrt.jar:?] at java.lang.Thread.run(Unknown Source)[?:1.8.0_111]