Updated WordPress and inline lightbox content disappears after second click

Hi I just updated my site from wp version 3.5 to 3.8. I have some inline lightboxes, which work the first time I click them, but when I click on the same link, the lightbox opens, but the content is missing. I’ve searched this forum and googled it but couldn’t find an answer. Could someone please help? I have the latest version of the plugin, wordpress, and jquery. I’ve followed the instructions and can’t quite figure it out. Any help would be greatly appreciated.

https://wordpress.org/plugins/lightbox-plus/