You must edit file ‘jquery.colorbox.js’ under wp-content/plugins/lightbox-gallery/js/
On line 60 you find this:
// internationalization
current: “image {current} of {total}”,
previous: “previous”,
next: “next”,
close: “close”,
xhrError: “This content failed to load.”,
imgError: “This image failed to load.”,
You have to translate to your language everything enclosed by quotation marks.
I hope it helps
I have the same problem and also no localization works for plugins on WP 2.9.
