You can try moving things around to isolate the problem as well. i.e.: move the session query code inside upload bean to see if the problem is the call in the DAO.
PS: Where do you start your conversation ? I don't see it. Is it an implicit conversation ?
Thanks, it did the job...
Thanks for you answer, removing the itemValue
solved the problem. The exception was not related so much to the problem...
Anyway, I do not have a specific place in which I start the conversation. I am still getting used to the conversation idea ... ;-)