scene builder won't open

Question

When i right click the FXML document and click open with scene builder the scene builder opens on my taskbar but if i click it, it will not show anything can anyone please help me?

  package application;

    import javafx.application.Application;
    import javafx.fxml.FXMLLoader;
     import javafx.scene.Parent;
    import javafx.scene.Scene;
    import javafx.scene.image.Image;
   import javafx.scene.image.ImageView;
   import javafx.stage.Stage;

 public class Main extends Application {
   @Override
   public void start(Stage primaryStage) {
    try {
        Parent root = FXMLLoader.load(getClass().getResource(
                "/application/MyView.fxml"));
        Scene scene = new Scene(root);
        scene.getStylesheets().add(
                getClass().getResource("application.css").toExternalForm());
        primaryStage.setScene(scene);
        primaryStage.show();
        setUserAgentStylesheet(STYLESHEET_CASPIAN);

    } catch (Exception e) {
        e.printStackTrace();
    }
}

    public static void main(String[] args) {
    launch(args);
   }
 }

This is my main class

Answer 1

I found out that it is a bug and you have to open Scene Builder from your desktop and:

• File>Preferences>Reset To BuiltIn Defaults

• File>Open recent>clear menu