Are you 100% sure that you get a new instance of the Consumer (and therefore, the UoW and the session) every time a message is received? That's very important.
Weird object reference errors are typical of thread safety issues. /G -- You received this message because you are subscribed to the Google Groups "nhusers" group. To unsubscribe from this group and stop receiving emails from it, send an email to nhusers+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/nhusers/CAAOnFsOzo8vcyKunRpL4XRDVrqcrvngoQGq3y-nkR303rPnavA%40mail.gmail.com.