Custom Authentication

<objectServer remoteBaseURL="http://localhost">
      <clientSettings isDistributed="false"/>
      <serverSettings useAspNetSecurityServices="true" loginManagerRequired="true" allowAnonymousLogin="true" />      
 </objectServer>

*I used the devforce Business application template jetpack theme for silverlight. 

* move around the some of the template files to a wcf ria class library. build ok

* created a class to Implement IEntityLoginManager, put it on my wcf .net class project

 public partial class LoginManager : IEntityLoginManager
    {
        public IPrincipal Login(ILoginCredential credential, EntityManager entityManager)
        {
            LoginCredential guestCredential =  new LoginCredential("Guest", string.Empty, string.Empty);
 
            if (credential == null)            
                credential = guestCredential;                
                
            else
            {                           
                MainRoot svcRoot = new MainRoot(); //EF created from devforce that contains the usernames and password            
 
                InfoUser entUser = svcRoot.InfoUsers.Where(p => p.UserName == credential.UserName && p.Password == credential.Password)
                    .SingleOrDefault();
 
                if (entUser != null)
                {
 
                }
            }
 
            return CreatePrincipalUser(credential);
        }
 
        public void Logout(IPrincipal principal, EntityManager entityManager)
        {
            //no special processing needed
        }
 
        private IPrincipal CreatePrincipalUser(ILoginCredential credential)
        {            
            var identity = new UserIdentity(credential.UserName);
            var principal = new UserProfile(identity, new string[] { });
 
            return principal;
        }

 public class QueryInterceptor : EntityServerQueryInterceptor
    {
        protected override bool AuthorizeQuery()
        {
            //return base.AuthorizeQuery();
 
            bool blnAllowed = false;
 
            if (this.Principal.Identity.IsAuthenticated)
                blnAllowed = true;
            else
            {
                if (this.Query.ElementType == typeof(InfoUser))
                    blnAllowed = true;                
            }
 
            return blnAllowed;
        }
    }

* I did not touch the authenticationManager leave it as is. well change the user property to my user type.

now the problem is the one highlighted in orange, it saying inner exception, something to do with defaultmanager,

 basically what im trying to do is login the user, lookup the credential on that table and authenticate but the problem is the 

EntityManager need to be login first, so i made a guest credentials, but it get logout by the authenticationmanager every time 

a user would login, so i get a entityManager.Principal = null, if i don't logout the guest user,

 it will not carry on the login process and my custom login is not called.

I need this working so continue a prototype using your product. the documentation is not helping much on what i'm trying to accomplished.