The issue we have is that if a user selects files to upload and then leaves the page up long enough to have the session expire, when they click start upload an error shows that says unknown error and lists the code of the page.  I need to be able to either trap the error and show a better error.  We don't want to put in logic to keep the session alive.  Just want the user to know the session expired and have them redirected to login.

Thank you in advance for any help you can provide.