WCF Service Returns Load Operation failed for query ‘GetProducts’. The remote server returned an err

I am trying to work through the walkthrough on creating a RIA Services Class Library available from here; ‘http://msdn.microsoft.com/en-us/library/ee707351(VS.91).aspx

However when I run I get the error above; I wonder if there is a problem with the Web.Config file (given this is the one bit I had to edit myself ;))
This is as follows;


    
      
    
    
      
    

    
        
        
          
        
    
    
      
    

and the code which makes the call to the service that is failing is as follows;
        void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            ProductsDomainContext ctx = new ProductsDomainContext();

            try
            {
                ProductsGrid.ItemsSource = ctx.Products;
                ctx.Load(ctx.GetProductsQuery(), loadOperation =>
                {
                    if (loadOperation.HasError)
                    {
                        MessageBox.Show(loadOperation.Error.Message);
                        loadOperation.MarkErrorAsHandled();
                    }
                }
                , null);
            }
            catch (Exception ex)
            {
                
                throw ex;
            }
        }

Thanks in advance

Could you please give information about your environment ?  VS version, dotnet framework version and RIA ? more over if you are using VS2008 SP1 then RIA beta only is available and  well available for VS2010./

Could you please give information about your environment ?  VS version, dotnet framework version and RIA ? more over if you are using VS2008 SP1 then RIA beta only is available and  well available for VS2010.

I have the same problem. Using VS 2010, .NET Version 4.0 and WCF RIA Services Version 1.0.I initially followed the steps with my own database. When that didn’t work  I downloaded the AdevntureWorksLT database and got exactly the same problem……However if I build a Silverlight Business Application to display the Products table it works just fine.