Why isn't the richtextbox displaying this table properly?

I found the solution. Evidently, there are more than one RichEdit library on every system, and the default to an older version (4.0 I think). 5.0 has fixed most of the problems with the RTF interpretation. To get a RichtextBox that uses it, you must inert RichTextBox, and overload the CreateParams property.

Here is how I did it:

public partial class FullRichtextBox : RichTextBox {
    public FullRichtextBox() :base() {
        InitializeComponent();
    }
    [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
    static extern IntPtr LoadLibrary(string lpFileName);

    protected override CreateParams CreateParams {
        get {
            CreateParams param = base.CreateParams;
            if (LoadLibrary("msftedit.dll") != IntPtr.Zero) {
                param.ClassName = "RICHEDIT50W";
            }
            return param;
        }
    }
}