nexthaha on "[Theme: Barletta] Menu Error"

I made main menu with pages.
Menu is not working.
It seems to be linked each other but can't move to other page.
I found it works under 'customize mode'.
plz help me..
http://www.nexthaha.net

I deactivated 'Advanced AJAX Page Loader'
It works now.
Is there someone has another solution?