Making the Silverlight 3 .NET RIA Services Business Application, authenticate to SQL Server and not SQLServerExpress

If you’re are using SQL Server Developer edition to develop a Silverlight 3 .NET RIA Services Business Application you might encounter an exception during login: Load operation failed for query ‘Login’. at System.Web.DomainServices.ReflectionDomainServiceDescriptionProvider.ReflectionDomainOperationEntry.Invoke(DomainService domainService, Object[] parameters)    at System.Web.DomainServices.DomainOperationEntry.Invoke(DomainService domainService, Object[] parameters, Int32& totalCount)    at System.Web.DomainServices.DomainService.Query(QueryDescription queryDescription, IEnumerable`1& validationErrors, …