Gin problem

[Laura Baeza]

Hello everyone: I read a post of David M.Chandler about how to reduce startup time with gwt-presenter here I try the author suggestion of not doing anything on the constructor…however when I try to bound my presenter and its view with gin, gin gives me this error:
java.lang.AssertionError: This UIObject’s element is not set; you may be missing a call to either Composite.initWidget() or UIObject.setElement()… so my doubt is if I didnt set up anything on the view constuctor how can I fix this error???
here is part of my code:

public class LeftPlace extends ProvidedPresenterPlace<LeftPresenter>{

	public static String NAME = "subsistemas";
	int n = 0;
	public LeftPlace(Provider<LeftPresenter> presenter) {
		super(presenter);
	}

	@Override
	public String getName() {
	 return NAME;
	}

	public void onPlaceRequest(){
		if(n == 0)
		{
			getPresenter().onFirstRequest();
			n++;
		}
		
	}
}

///////////////////////////////////////////////////////////////////////////////////////////////////////////

public class LeftPresenter extends WidgetPresenter<LeftPresenter.Display>{
	@Inject
	public LeftPresenter(Display display, EventBus eventBus) {
		super(display, eventBus);
		
	}

	public interface Display extends WidgetDisplay{
		VerticalPanel getSubsystemsPanel();
		HorizontalEventPanel createSubsystemPanel(Subsystem subsystem);
		void init();
	}

	public void onFirstRequest(){
		display.init();
		int size = SubsystemAdmin.getSubsystemAdmin().getSubsystems().size();
		for(int i = 0; i < size; i++) {
			final Subsystem s = SubsystemAdmin.getSubsystemAdmin()
			.getSubsystems().get(i);
			HorizontalEventPanel h = display.createSubsystemPanel(s);
			display.getSubsystemsPanel().add(h);
			h.addClickHandler(new ClickHandler() {
				@Override
				public void onClick(ClickEvent event) {
				PlaceRequest req = 	new PlaceRequest(TopPlace.NAME).with(TopPlace.PARAM_ID, s.getTitle());
				eventBus.fireEvent(new PlaceRequestEvent(req));
				}
			});
		}
		 
	}
	@Override
	protected void onBind() {
		
		
	}

////////////////////////////////////////////////////////////////////////////////////////////////////////////

public class SubSystemView extends Composite implements LeftPresenter.Display {

	private VerticalPanel allSubSystemPanel;
	 

	public SubSystemView() {
		super();
	}

	 

	@Override
	public VerticalPanel getSubsystemsPanel() {
		return allSubSystemPanel;
	}

	@Override
	public void init() {
		allSubSystemPanel = new VerticalPanel();
		initWidget(allSubSystemPanel);	
	}

 

	
}