title: Does Entity Framework 4 support Many-to-Many queries?
body: <p>I have the exact same problem as described in this post (event content / tags objects):</p>
  
  <p><a href="https://stackoverflow.com/questions/110314/linq-to-entities-building-where-clauses-to-test-collections-within-a-many-to-ma#131551">LINQ to entities - Building where clauses to test collections within a many to many relationship</a></p>
  
  <p>I am getting the Exception:</p>
  
  <p>Unable to create a constant value of type 'XXX.Tag'. Only primitive types ('such as Int32, String, and Guid') are supported in this context.</p>
  
  <p>Is this problem resolved in E.F. 4?</p>