I am trying to: activate the plugin after installing (i deactivate the previous plugin qTranslate).
Instead, I got: Warning: require(/home/web/www.gracevillas.it/www/wp-content/plugins/sitepress-multilingual-cms/inc/functions-helpers.php): failed to open stream: No such file or directory in /home/web/www.gracevillas.it/www/wp-content/plugins/sitepress-multilingual-cms/sitepress.php on line 44