That means your database didn’t get upgraded. OR, it could mean it just hasn’t finished. If your ewwwio_images table is large, and is being converted to utf8, that can take a while. So, if the issue persists after a couple hours, there are a couple ways of attempting a fix:
1. Using something like phpmyadmin, open your WordPress database, browse to the wp_options table, and search for option_name = ‘ewww_image_optimizer_version’, and set it to 10, then visit the settings page to make sure the db upgrade kicks in.
2. You can also manually edit the file common.php, and set the version to 325.1. It’s pretty close to the top, pretty hard to miss.
If you have root/console access to the server, you can run the ‘top’ command to see if mysql is using a lot of CPU. If it is, then it is probably just in the middle of upgrading.
If it continues to throw errors, after both of those, and after waiting a few hours, then there is likely an error in the upgrade routine we need to track down. Let me know if that ends up being the case.
