@Baarssen I think this will do it. Goto your phpmyadmin, open your db, goto SQL on the top of the screen, and paste in this, and hit go. Adjusting the prefix tb_ to whatever you use...
Then you can goto your advanced setting in the theme, go down to Appearance of Columns and adjust them as desired.
INSERT INTO `tb_meta_lang` (`id_meta`, `id_shop`, `id_lang`, `title`, `description`, `keywords`, `url_rewrite`) VALUES
(27, 1, 1, 'Product', NULL, NULL, ''),
(28, 1, 1, 'Category', NULL, NULL, ''),
(29, 1, 1, 'CMS', NULL, NULL, '');