Program Doesnt Work after updating to 6.1.0

   I uploaded to the latest version when it came out and now I am getting an error in my authentication process during runtime:
The formatter threw an exception while trying to deserialize the message: 
There was an error while trying to deserialize parameter http://ideablade.com/EntityModel:bundle. 
The InnerException message was 'Element 'http://ideablade.com/EntityModel:Identity' contains data 
from a type that maps to the name 'http://schemas.datacontract.org/2004/07/CoreDB.Models:UserToken'. 
The deserializer has no knowledge of any type that maps to this name. Consider using a DataContractResolver 
or add the type corresponding to 'UserToken' to the list of known types - for example,
by using the KnownTypeAttribute attribute or by adding it to the list of known types passed to DataContractSerializer.'. 
Please see InnerException for more details.

UserToken looks like this

    [DataContract]
    [DiscoverableType(DiscoverableTypeMode.KnownType)]
    [KnownType(typeof(UserToken))]
    [KnownType(typeof(UserBase))]
    public class UserToken : UserIdentity
    {

        public UserToken(object id, string name, string type, bool isAuthenticated)
            : base(name, type, isAuthenticated)
        {
            _userID = id;
        }
        //[DataMember]
        public string FriendlyName { get; set; }

        //[DataMember]
        public string PharmacyID { get; set; }

        [DataMember]
        public object UserID
        {
            get { return _userID; }
            set { _userID = value; }
        }

        private object _userID;
     }

It was working fine before. Not sure what happened. I ran the custom tool on the code generation and everything compiled fine. Anybody have any ideas?