Larry, if you were asking me, then yes I finally got it to work. What I had to do was change line #52 in login.inc.php from
if ($row['expired'] === 1) $_SESSION['user_not_expired'] = true;
to:
if ($row['expired'] == 1) $_SESSION['user_not_expired'] = true; (removed one "=" from the equality.)
It also worked if I changed the equality to "== true". But with the triple = sign I kept getting the Expired warning when attempting to view the categories or documents whether signing in with an expired or an unexpired user.
Thanks for checking back!