Sys.Data.AdoNetServiceProxy Error

Not sure if this is the right place to post this message but here goes anyway.

I am doing some testing with the Microsoft AJAX preview 3 and MVC.  I have succesfully set up a client side template declaratively like this:

<select id="storeFronts" class="sys-template" size="5" multiple="multiple"
        sys:attach="dataview"
        dataview:serviceuri="/home"
        dataview:query="GetStoreFront ...