[Plugin: Infinite-Scroll] Infinite scroll doesn't work with my theme!

Why isn’t Infinite scroll working on my modified Minimalism theme?

This are my settings:

Content Selector #content
Posts Selector #content div.post
Navigation Selector div.navigation
Next Page Selector div.navigation a:first

Any help will be great for your karma 🙂 !

http://ww.wp.xz.cn/extend/plugins/infinite-scroll/