Digg digg not showing on custom post types

Hello,

Digg digg is wonderfull, but not showing on my custom post types.

Exemple :

http://www.alsaseo.fr/le-declassement-parodie/ : working
http://www.alsaseo.fr/evenements/apero-seo-strasbourg-14-juin-2013/ : not working (custom post : event)

I tried to force with the following code, but nothings happens.

add_filter('the_excerpt', 'dd_hook_wp_content');
add_filter('the_content', 'dd_hook_wp_content');

Someone to help ?
Thanks 🙂

http://wordpress.org/extend/plugins/digg-digg/