XAML created via VS2010 IDE for Data Binding incorrect?

Question

I am binding to an object which is a ModelView. I am using the follwing XAML to set the DataContext for design time visibility of the object properties.

          d:DataContext="{d:DesignInstance q:ModelViewController}"

I then bind to a collection property of my object and set the DisplayMemberPath using the IDE which creates the following property against my combo box,

          DisplayMemberPath="{Binding Path=SalesReps/Name}"

I run the project and I see no data in the combo box. So I manually alter the XAML to,

          DisplayMemberPath="Name"

and I now see the data in my combo box.

 

Have I missed something?

Chris.