Hey,

I'm new to GWT and am experimenting with adding widgets to my app. I
am using copy and paste code from the documentation:

    public void onModuleLoad() {
        final DockLayoutPanel p = new DockLayoutPanel(Unit.EM);
        p.addNorth(new HTML("header"), 2);
        p.addSouth(new HTML("footer"), 2);
        p.addWest(new HTML("navigation"), 10);
        p.add(new HTML("lorem ipsum foo bah"));
        RootPanel.get().add(p);
    }

Once I run this (via the eclipse plugin), I get a white HTML page that
just says "header". If I comment out the north line, I get a fully
blank page.

If I modify this to instead be:

   RootPanel.get().add(new Button("foo"))

...the button displays without problems (indeed, the greeter app
rendered and worked without problems). Other panels also seem to have
a similar problem of not rendering properly. What's going wrong?

Thanks
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