RiaContext.Current.Authentication.LoadUser Intermittent Error

11-08-2009 1:10 AM |

I am developing a Silverlight application with a login using RIA Services using VS2008.  It works 100% on my main dev machine.

When I copy the solution to my laptop (except the web.config file) and run it in VS2008, it works once in a while (maybe 1 time in 20).  The rest of the time I get a NotSupportedException, "The URI prefix is not recognized" at the LoadUser call in the MainPage constructor ( I also tried this code in the Loaded event with the same result.) 

Here's the code:

        public MainPage()
        {
            InitializeComponent();
            this.loginContainer.Child = new LoginControl();
            RiaContext.Current.Authentication.LoadUser();

            // need to change menu with login & logout
            RiaContext.Current.Authentication.LoggedIn += Authentication_LoggedIn;
            RiaContext.Current.Authentication.LoggedOut += Authentication_LoggedOut;

As I said, the code works on occasion, but most times it fails.  I tried uninstalling and reinstalling RIA services.  Any suggestions?

Thanks,

Terry