System.InvalidOperationException when setting association property inside Silverlight RIA generated client code

Question

Could somebody please help me resolve the System.InvalidOperationException which is being thrown inside the generated client code of my Silverlight RIA services. The exception message is as follows:-

This EntityContainer does not contain an EntitySet of type 'Deintegro.DAL.Data.Title'. If the type is external to this EntityContainer, please make sure you’ve called AddReference to establish the external link.

The exception gets thrown when the client generated code tries to return the value of an association property.