Please tell me where to paste this code. I've been very frustrated by this bug, because my new site using 2.0.15 was giving new users the redirect for 2 weeks before I was made aware there was a problem. It has taken me another week to find this fix. The documentation for this software is terrible!

My site will probably never recover from this. It is a small, local free classifieds site that depends on users contributing content.

One solution was provided by "Bandit-x", please view the solution here

the file is 'yoursite/user.php'