[Plugin: Viper’s Video Quicktags] Not working

Hello,

I can not have any video appearing. I tried youtube and dailymotion.

<?php wp_head(); ?> is present.

You can see the result at the end of this post.
http://www.emarketinglicious.fr/entrepreneur-internet/idee-creation-entreprise-internet-%E2%80%93-4-metiers-du-web-a-exercer-depuis-son-domicile
The youtube url is:
http://www.youtube.com/watch?v=HyTpzgAW5NA

I have another post which is not online.
There is a black screen for the videos from dailymotion and just some white space for the ones from youtube.

Thanks in advance for any help,