Monotouch Dialog Custom Element and GetHeight not being called - xamarin.ios

Question

Using Monotouch 5.2.11 iOS
I have followed this tutorial (http://tirania.org/monomac/archive/2011/Jan-18.html), created a custom cell with an image and have also added the IElementSizing Interface. The GetHeight is never called.
Similar questions have been asked and the generally accepted solution was to make sure and create the RootElements first, set the UnEvenRows=true before adding them to the Controller. This did not work. I've tried that as well as about every other combination of adding sections to root elements and have not ever seen the GetHeight fired.
The MyDataElement is an image that is 320x200 which displays fine, but the string element that comes after it is not shown (assuming it is behind it). Consequently if I drag the custom cell up above the top, it disappears, reappears, and the second stringelement displays on top of it.
Here is the code I've tried:
public class MyDataElement : Element, IElementSizing {
static NSString key = new NSString ("myDataElement");
public MyData MyData;
public MyDataElement (MyData myData) : base (null)
{
MyData = myData;
}
public float GetHeight (UITableView tableView, NSIndexPath indexPath){
return 200f; // break point here is never hit ever
}
public override UITableViewCell GetCell (UITableView tv)
{
var cell = tv.DequeueReusableCell (key) as MyDataCell;
if (cell == null)
cell = new MyDataCell (MyData, key);
else
cell.UpdateCell (MyData);
return cell;
}
public partial class TableTester : DialogViewController
{
public TableTester () : base (UITableViewStyle.Grouped, null)
{
var re = new RootElement("Sample") {
new Section("Testy") {
new MyDataElement(new MyData() { stuff="hello"}),
new StringElement("Sample")
}
};
re.UnevenRows = true;
this.Root = re;
//this.Root = root;
}
}
In addition to that I've even done this which didn't work either:
public class TestNavigator : UINavigationController {
public TestNavigator() {
TabBarItem = new UITabBarItem("Test", null, 1);
var re = new RootElement("Sample") {
new Section("Sammy") {
new StringElement("Sample"),
new MyDataElement(new MyData() { stuff="sam"}),
new StringElement("Sample 2")
}
};
re.UnevenRows = true;
var dv = new DialogViewController(re);
re.UnevenRows = true;
PushViewController(dv, true);
}

Answer 1

After plenty of trial and error, I had to make sure and remove the reference to Monotouch.Dialog that I had downloaded from github and use the built in reference. It seems that the getheight maybe broken in github.