[Plugin: JiaThis分享工具] show 404 not found

Hello,
I am using jiathis and WPtouch plugins for my website. However, it shows 404 NOT FOUND in my iphone once I activate the jiathis.
I clicked on my post, the mobile web linked to jiathis_utility.html and “404 NOT FOUND” shown. Any solution? Thousand Thanks.

http://wordpress.org/extend/plugins/jiathis/