title: WCF ria Service, domain service does not show available context
body: <p>I am new to WCF RIA development. I have created a silverlight 4 application with WCF ria support. Then I have created ADO.Net entity data model based on a local database file. Now when I am going to create a Domain service class the dropdown below the "available context classes" is empty and it does not show the names of tables from the datasource.</p>
  
  <p>Am I missing any step here or is something not installed properly.</p>
  
  <p>I am using VS 2010 &amp; Sql server Express 2008.</p>