JabRef 5.0-beta.1--2019-12-15--0b8b1d6
Windows 10 10.0 amd64
Java 13.0.1

Steps to reproduce:

1.Run app
2.Open preferences section of menu
3.Change language to Dutch and click Save
4.Change language once again before restarting application, because otherwise app will crash at the beginning. To run it once you again you will have to clear registers.

Paste your log details here.
java.lang.IllegalStateException: It is not allowed that the toReplace string: 'author=smith and title=electrical' does not exist in the original string
at org.jabref/org.jabref.gui.util.TooltipTextUtil.splitReplace(Unknown Source)
at org.jabref/org.jabref.gui.util.TooltipTextUtil.formatToTexts(Unknown Source)
at org.jabref/org.jabref.gui.search.GlobalSearchBar.setHintTooltip(Unknown Source)
at org.jabref/org.jabref.gui.search.GlobalSearchBar.updateHintVisibility(Unknown Source)
at org.jabref/org.jabref.gui.preferences.PreferencesDialogViewModel.storeAllSettings(Unknown Source)
at org.jabref/org.jabref.gui.preferences.PreferencesDialogView.savePreferencesAndCloseDialog(Unknown Source)
at org.jabref/org.jabref.gui.preferences.PreferencesDialogView.lambda$new$0(Unknown Source)
at org.jabref/org.jabref.gui.util.ControlHelper.lambda$setAction$0(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.CompositeEventHandler$NormalEventFilterRecord.handleCapturingEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.CompositeEventHandler.dispatchCapturingEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventHandlerManager.dispatchCapturingEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventHandlerManager.dispatchCapturingEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.CompositeEventDispatcher.dispatchCapturingEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
at org.jabref.merged.module/javafx.event.Event.fireEvent(Unknown Source)
at org.jabref.merged.module/javafx.scene.Node.fireEvent(Unknown Source)
at org.jabref.merged.module/javafx.scene.control.Button.fire(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.scene.control.inputmap.InputMap.handle(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
at org.jabref.merged.module/javafx.event.Event.fireEvent(Unknown Source)
at org.jabref.merged.module/javafx.scene.Scene$MouseHandler.process(Unknown Source)
at org.jabref.merged.module/javafx.scene.Scene.processMouseEvent(Unknown Source)
at org.jabref.merged.module/javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(Unknown Source)
at org.jabref.merged.module/com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
at org.jabref.merged.module/com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
at org.jabref.merged.module/com.sun.glass.ui.View.notifyMouse(Unknown Source)
at org.jabref.merged.module/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at org.jabref.merged.module/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)