It should be added that the plugin has some coding issues. I’m seeing this error when I turn on WordPress debugging:
Notice: register_uninstall_hook was called incorrectly. Only a static class method or function can be used in an uninstall hook. Please see Debugging in WordPress for more information. (This message was added in version 3.1.) in /wp-includes/functions.php on line 3245
There is also this error appearing:
Notice: Undefined index: colorbox in /wp-content/plugins/grid-gallery-ready/vendor/Rsc/Config/Loader.php on line 30
The other undefined indexs are “core, developer, galleries, installer, photos, promo, settings, stats and ui.”
All errors disappear on deactivation of the Grid Gallery Ready! plugin.
On activation, with debugging turned on I see this:
The plugin generated 9982 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.