[Plugin: Lightbox Plus] error message after moving server

I moved a site from a dev to a production server and changed the url using the script searchreplacedb2.php. All went well, except Lightbox plus gives me an error at the bootom of the setting page:” Reset/Re-initialize Lightbox Plus: ” which reappears even when i click ok. I tried removing and reinstalling the plugin, but the message still appears. The lightbox works fine, how can i prevent the message appearing?

https://www.ads-software.com/extend/plugins/lightbox-plus/