Asp.net - AutoCompleteBox Is Evil?

Why does the AutoCompleteBox hate me?? I've spent at least 3 days trying to get the ACB to display data in the drop down list. All I get is the Class name in the Dropdown list. THe Listbox work Perfectly. Time and Effort Heres a Pic of whats its doing: Now heres the XAML for the Listbox

<ListBox Height="100" HorizontalAlignment="Left" Margin="367,81,0,0" Name="ListBox1" VerticalAlignment="Top" Width="184" ItemsSource="{Binding}" >
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">

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