Problem with v.1.4

Hi!

I already update to 1.4 and mi index didn´t works, when i turn off the pluggin everything works. But i didn´t have comment. I use this pluggin for comments in my wordpress.

Mi website is Digitalrev4U.com, the theme is Avenue Magazine. Please tell me what is brong.

http://ww.wp.xz.cn/extend/plugins/facebook/