It seems that the content of ApplicationContext.ClientContext disappear . During the login proess i put the user id in the clientContext, then i use my implementation of IAuthorizeDataPortal to recreate the user and get the stuff i need from it. Now this is working fine for a couple of back and forth and than suddenly no more userID in the ClientContext, this can happen at any time, i there seems to have no pattern.
By reading the previous post, a recurring anwser is make sure you have the csla web in the folder, and i do.
i'm using Win8 with CSLA Core.4.5.30. on .net 4.5