Doesnt work maybe selector PB ?

Hey,

I wanna add infinite scroll on my website but it doesn’t work.

I think I have some probleme with Selector. For the moment i put this :

Content Selector : #content
Navigation Selector : .navigation
Next Selector : .navigation a:active
Item Selector : .post-wrap

My website is HERE

Please someone can help me ?

http://wordpress.org/extend/plugins/infinite-scroll/