Creating a group gives Null pointer exception

[bernhard-kleine]

JabRef 5.0-dev--snapshot--2019-04-08--master--3d2d61d0c
Windows 7 6.1 amd64
Java 1.8.0_201

• [+ ] I have tested the latest development version from http://builds.jabref.org/master/ and the problem persists

Steps to reproduce the behavior:

1. ...
2. ...
3. ...

Log File

Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Saving library...
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Error occurred when parsing entry: 'Error in line 1340: EOF in mid-string'. Skipped entry.
Error occurred when parsing entry: 'Error in line 1525: EOF in mid-string'. Skipped entry.
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Saved library 'K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib'.
Saving library...
Deleted 1 entry.
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Saved library 'K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib'.
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Saving library...
Number of entries successfully imported: 1
Import canceled
Saved library 'K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib'.
Saving library...
Saved library 'K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib'.
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Saving library...
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Saved library 'K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib'.
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Deleted 1 entry.
Saving library...
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Saved library 'K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib'.
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Saving library...
Number of entries successfully imported: 1
Import canceled
Saved library 'K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib'.
Saving library...
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Error occurred when parsing entry: 'Error in line 373: EOF in mid-string'. Skipped entry.
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Error occurred when parsing entry: 'Error in line 465: EOF in mid-string'. Skipped entry.
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Error occurred when parsing entry: 'Error in line 186: EOF in mid-string'. Skipped entry.
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Saved library 'K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib'.
Uncaught exception occurred in Thread[JavaFX Application Thread,5,main]
java.lang.NullPointerException
  at com.sun.javafx.scene.control.skin.ComboBoxPopupControl.positionAndShowPopup(ComboBoxPopupControl.java:197)
  at com.sun.javafx.scene.control.skin.ComboBoxPopupControl.show(ComboBoxPopupControl.java:170)
  at com.jfoenix.skins.JFXColorPickerSkin.show(JFXColorPickerSkin.java:162)
  at com.sun.javafx.scene.control.skin.ComboBoxBaseSkin.handleControlPropertyChanged(ComboBoxBaseSkin.java:127)
  at com.jfoenix.skins.JFXColorPickerSkin.handleControlPropertyChanged(JFXColorPickerSkin.java:169)
  at com.sun.javafx.scene.control.skin.BehaviorSkinBase.lambda$registerChangeListener$70(BehaviorSkinBase.java:197)
  at com.sun.javafx.scene.control.MultiplePropertyChangeListenerHandler$1.changed(MultiplePropertyChangeListenerHandler.java:55)
  at javafx.beans.value.WeakChangeListener.changed(WeakChangeListener.java:89)
  at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:182)
  at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:81)
  at javafx.beans.property.ReadOnlyBooleanPropertyBase.fireValueChangedEvent(ReadOnlyBooleanPropertyBase.java:72)
  at javafx.beans.property.ReadOnlyBooleanWrapper.fireValueChangedEvent(ReadOnlyBooleanWrapper.java:103)
  at javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:110)
  at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:144)
  at javafx.scene.control.ComboBoxBase.setShowing(ComboBoxBase.java:185)
  at javafx.scene.control.ComboBoxBase.show(ComboBoxBase.java:391)
  at com.sun.javafx.scene.control.behavior.ComboBoxBaseBehavior.show(ComboBoxBaseBehavior.java:286)
  at com.jfoenix.controls.behavior.JFXColorPickerBehavior.callAction(JFXColorPickerBehavior.java:69)
  at com.sun.javafx.scene.control.behavior.BehaviorBase.callActionForEvent(BehaviorBase.java:218)
  at com.sun.javafx.scene.control.behavior.ComboBoxBaseBehavior.callActionForEvent(ComboBoxBaseBehavior.java:136)
  at com.sun.javafx.scene.control.behavior.BehaviorBase.lambda$new$11(BehaviorBase.java:135)
  at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
  at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
  at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
  at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
  at javafx.event.Event.fireEvent(Event.java:198)
  at javafx.scene.Scene$KeyHandler.process(Scene.java:3964)
  at javafx.scene.Scene$KeyHandler.access$1800(Scene.java:3910)
  at javafx.scene.Scene.impl_processKeyEvent(Scene.java:2040)
  at javafx.scene.Scene$ScenePeerListener.keyEvent(Scene.java:2501)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:217)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:149)
  at java.security.AccessController.doPrivileged(Native Method)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleKeyEvent$352(GlassViewEventHandler.java:248)
  at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleKeyEvent(GlassViewEventHandler.java:247)
  at com.sun.glass.ui.View.handleKeyEvent(View.java:546)
  at com.sun.glass.ui.View.notifyKey(View.java:966)
  at com.sun.glass.ui.win.WinApplication._enterNestedEventLoopImpl(Native Method)
  at com.sun.glass.ui.win.WinApplication._enterNestedEventLoop(WinApplication.java:204)
  at com.sun.glass.ui.Application.enterNestedEventLoop(Application.java:511)
  at com.sun.glass.ui.EventLoop.enter(EventLoop.java:107)
  at com.sun.javafx.tk.quantum.QuantumToolkit.enterNestedEventLoop(QuantumToolkit.java:590)
  at javafx.stage.Stage.showAndWait(Stage.java:474)
  at javafx.scene.control.HeavyweightDialog.showAndWait(HeavyweightDialog.java:162)
  at javafx.scene.control.Dialog.showAndWait(Dialog.java:341)
  at org.jabref.gui.FXDialogService.showCustomDialogAndWait(FXDialogService.java:235)
  at org.jabref.gui.groups.GroupTreeViewModel.addNewSubgroup(GroupTreeViewModel.java:144)
  at org.jabref.gui.groups.GroupTreeView.lambda$createContextMenuForGroup$315(GroupTreeView.java:331)
  at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
  at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
  at javafx.event.Event.fireEvent(Event.java:198)
  at javafx.scene.control.MenuItem.fire(MenuItem.java:462)
  at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer.doSelect(ContextMenuContent.java:1405)
  at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer.lambda$createChildren$343(ContextMenuContent.java:1358)
  at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
  at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
  at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
  at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
  at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
  at javafx.event.Event.fireEvent(Event.java:198)
  at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
  at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
  at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
  at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:394)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
  at java.security.AccessController.doPrivileged(Native Method)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$353(GlassViewEventHandler.java:432)
  at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:431)
  at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
  at com.sun.glass.ui.View.notifyMouse(View.java:937)
  at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
  at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
  at java.lang.Thread.run(Unknown Source)

Added group "Normal".
Saving library...
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Saved library 'K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib'.
Saving library...
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Opening: C:\Users\bk\AppData\Local\Temp\jabref8226089645123273317.bib
Error occurred when parsing entry: 'Error in line 10090: EOF in mid-string'. Skipped entry.
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Error occurred when parsing entry: 'Error in line 9772: EOF in mid-string'. Skipped entry.
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Saved library 'K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib'.
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib
Opening: K:\BuchprojektSpringer\VierteAuflage\Literatur\EndokrinologieKunde20190320VS5.0.bib

[tobiasdiez]

Cannot reproduce, especially since there are no information given wheather this bug occurs always or the steps required to trigger it. c'mon @bernhard-kleine you know how things are going here (and that we don't have spare time trying to figure out how one might trigger the bug instead of spending the time in actual fixing it...)