I've been trying to add a basic HUD to my 2D LWJGL game using nifty gui, and while I've been successful in rendering panels and static text on top of the game, using the built-in nifty controls (e.g. an editable text field) causes the rest of my game to not render. The strange part is that I don't even have to render the gui control, merely declaring it appears to cause this problem.

I'm truly lost here, so even the vaguest glimmer of hope would be appreciated :-)

Some code showing the basic layout of the problem:

display setup:

        // load default styles
        nifty.loadStyleFile("nifty-default-styles.xml");
        // load standard controls
        nifty.loadControlFile("nifty-default-controls.xml");
        screen = new ScreenBuilder("start") {{
              layer(new LayerBuilder("baseLayer") {{
                childLayoutHorizontal();
                //next line causes the problem
                control(new TextFieldBuilder("input","asdf") {{
                    width("200px");
                }});
              }});
            }}.build(nifty);
            nifty.gotoScreen("start");

rendering

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    GLU.gluOrtho2D(0f,WINDOW_DIMENSIONS[0],WINDOW_DIMENSIONS[1],0f);
    //I can remove the 2 nifty lines, and the game still won't render
    nifty.render(true);
    nifty.update();
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    GLU.gluOrtho2D(0f,(float)VIEWPORT_DIMENSIONS[0],0f,(float)VIEWPORT_DIMENSIONS[1]);
    glTranslatef(translation[0],translation[1],0);
    for (Bubble bubble:bubbles){
            bubble.draw();
    }
    for (Wall wall:walls){
        wall.draw();
    }
    for(Missile missile:missiles){
        missile.draw();
    }
    for(Mob mob:mobs){
        mob.draw();
    }
    agent.draw();