[Plugin: DB Cache Reloaded] wpdb class is redefined, plugin cannot work

I’ve never had an issue with DB Cache Reloaded before. But since upgrading to the latest version, it doesn’t play nicely with WordPress. I keep getting: “wpdb class is redefined, plugin cannot work! Previous definition is at E:\inetpub\vhosts\northcoasttec.com\httpdocs\wp-includes\wp-db.php:52.” I’ve followed the instructions and disabled the cache, saved, then re-enabled and saved again. As soon as I navigate to another page, the error appears at the top of the page again.

You have a link on the top of the page: “please check FAQ how to do manual upgrade.” I don’t see anything on that page that refers to manually upgrading the plugin. Please help! Thanks for a great plugin.