ThickBox included with the plugin conflicts with the one included in WordPress

After an update, we noticed that modal dialogs using thickbox stopped to work.

At the moment it seems the only place in “plain” WordPress where thickbox is used is wp-admin/plugin-install.php , but other plugins may use it and stop to work.

It seems also the parts where your plugin is using thickbox are not working.

The incompatibility is due to incompatible css rules between the WordPress version and your version, with the result that the “TB_Window” has always the display:none style.

I suggest you to avoid loading a library that is already included in WordPress, and use the WordPress version. If you really need a specific version of that library, or other scripts and css, you should include them only in the pages of your plugin, in order to reduce the risk of incompatibilities with other plugins