It looks like you're new here. If you want to get involved, click one of these buttons!
I just upgraded from 1.1.2 to the latest version (18.104.22.168). I did the upgrade by just swapping the directories and then copying my old config.php into the new directory.
However, it seems like there have been some schema changes. For example, the campaigns table doesn't have the bounce_setup column which is causing an error on the send-to page.
How do I upgrade my old database tables to support the new version?
When you upgrade to a new version, the file, includes/update.php will update your database to make it work with the new version. See the code starting from line 271 in includes/update.php.