Application already added

I added an application for my website www.demo.ma at FaceBook
http://apps.facebook.com/demomama/

it work fine except when a user in Facebook try and add blog post, i receive this message

You've already added demo.ma to your Facebook applications.
Visit the My Applications page to adjust your settings or remove this app.

when i type again the url
http://apps.facebook.com/demomama/

the blog post get posted
and i received an error

Your Blog entry has been created.
warning: Invalid argument supplied for foreach() in /home/demoma/public_html/sites/all/modules/fb/fb.module on line 348.

Any help please