Resource Bundle - LoadException: No resources specified

[Chris Morgan]

I am new to DataFX and struggling to get localisation working. My main class is as shown:

public class Main extends Application {

    @Override

    public void start(Stage primaryStage) throws Exception{

        //set language

        ViewConfiguration viewConfig = new ViewConfiguration();

        Locale locale = new Locale("en","EN");

        viewConfig.setResources(ResourceBundle.getBundle(UIConstants.LANGUAGE_BUNDLE_PREFIX, locale));

        Flow applicationRootFlow = new Flow(HomeController.class, viewConfig);

        FlowHandler applicationRootFlowHandler = applicationRootFlow.createHandler();

        StackPane root = applicationRootFlowHandler.start(new DefaultFlowContainer());

        primaryStage.setScene(new Scene(root, UIConstants.APPLICATION_WIDTH, UIConstants.APPLICATION_HEIGHT));

        primaryStage.setTitle(UIConstants.APPLICATION_TITLE);

        primaryStage.show();

    }

    public static void main(String[] args) {

        launch(args);

    }

}

I have traced the code through, and the debug shows the Flow has loaded the resource successfully (see attached image).

 The resource has the required index, but the fxml is not loading the string, instead crashing with 

Caused by:... javafx.fxml.LoadException: No resources specified. /C:/.../Home.fxml:22

The line in the fxml is:

<Label fx:id="languageLabel" text="%displayLanguage" />

The resource bundle is:

applicationTitle=Service222222

displayLanguage=English