@carlo caccialanza: We haven’t make this theme compatible with qTranslate-X plugin. So, you might want to build child theme. For child theme and sample child theme, refer to http://catchthemes.com/blog/create-child-theme-wordpress/ and then add the following code in child theme functions.php file.
if ( ! function_exists( 'catchresponsive_invalidcache' ) ) :
/**
* Template for Clearing WPML Invalid Cache
*/
function catchresponsive_invalidcache() {
delete_transient( 'catchresponsive_featured_content' );
delete_transient( 'catchresponsive_featured_slider' );
delete_transient( 'catchresponsive_footer_content' );
delete_transient( 'all_the_cool_cats' );
} // catchresponsive_invalidcache
endif;
add_action( 'after_setup_theme', 'catchresponsive_invalidcache' );