Some labels in Tableview display as a black box

Hi guys,

Just started using Xamarin and I'm having some pretty basic problems at the moment. I wanted to do a quick prototype of an app but its being help up with the following issue.

I have a table view with a few different cells using the following code.

 ` Content = new TableView
        {
            Intent = TableIntent.Form,
            Root = new TableRoot("Table Root")
            {
                new TableSection("Table Section``")
                {
                    new EntryCell {Text = "Entrycell"},
                    new TextCell {Text = "TextCell"},
                    new ImageCell
                    {
                        Text = "ImageCell Text",
                        Detail = "ImageCell Detail",
                        ImageSource = "http://xamarin.com/images/index/ide-xamarin-studio.png"
                    },

                },

            }
        };`

The following is how it looks on a ipod on ios 6.

When I use the simulator on ios 6, I get the same thing. But when I switch and use an ios 7 simulator, everything looks fine. Is there a property I need to use when targeting ios 6?

Sorry if this has been posted somewhere else but I couldn't anything related to this issue.

Cheers
Matt