I'm getting this error randomly on my site:
Exception Details: System.Runtime.Serialization.SerializationException: Type is not resolved for member 'Authentication.CustomPrincipal,OrchidAuthentication, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
By random meaning I can surf around before it'll crash and then most of the time I can hit refresh and it'll work just fine again. I have an HttpModule that sets the context.User to my principal on begin request.