Also the Visual Composer plugin needs updating.
To update the Visual Composer plugin you need re-download the theme archive at http://themeforest.net/item/legenda-responsive-multipurpose-wordpress-theme/5888906 where we’ve recently included the updated versions of plugins VC and Revolution Slider.
After you unzip the archive you’ll find another archive Legenda_v2.2.zip, extract it as well and open this folder “legenda”.
The plugins are placed inside of legenda folder under framework/plugins directory. Upload the new version via FTP and remove the old one.
legenda/wp-content/plugin/js_composer
