Hi Ed.
Yes, I was editing wp-config.php in root which is when I started getting the “already defined” message.
I created a php.ini file in wp-admin folder and added “memory_limit = 200M” and it now works.
I found the solution near the bottom of this page. http://wordpress.org/support/topic/php-memory-limit-not-updated
Thanks for your help Ed 🙂