Haha, oh man... Can't believe I forgot about that post. I was actually doing everything right, except, in my case the domain name changed. I didn't think to create a duplicate database and install new over the top of it. I was doing it backward --> creating the database, installing a new version of classifieds, and then loading the old database into the new one.
It was also different because the gallery changed folders as well (is now in the root domain).
Anyway, this time the cookie issue stumped me. Because the setting is actually inside the database, it wasn't working on my new domain. I couldn't change it, either because I couldn't log in. So, I had to use phpMyAdmin to open the table and modify the domain setting manually.