Suggested Call back URL don't work

I'm not sure what you're doing. You're pointing your browser at something you downloaded from facebook. I have not idea what the code in there does.

There's a typo in Drupal for Facebook's README.txt. If you installed Drupal for Facebook in modules/fb/, you should extract the facebook-platform into modules/fb/facebook-platform, and not modules/facebook/...

But I still have no idea why you would point your browser to that URL.

Drupal suggest a callback URL :use http://www.intentionbook.com/. Otherwise, use http://www.intentionbook.com/?q=.

i use http://www.intentionbook.com/ because i use clean url.

So, i went back to the form on facebook and fill the callback URL with : http://www.intentionbook.com/

Then i have an error when i go to : http://apps.facebook.com/intentionbook :
Error while loading page from http://apps.facebook.com/intentionbook :
Received HTTP error code 500 while loading http://www.intentionbook.com/

Do you have an idea of what's wrong ??

Thanks

Drupal suggest a callback URL :use http://www.intentionbook.com/. Otherwise, use http://www.intentionbook.com/?q=.

i use http://www.intentionbook.com/ because i use clean url.

So, i went back to the form on facebook and fill the callback URL with : http://www.intentionbook.com/

Then i have an error when i go to : http://apps.facebook.com/intentionbook :
Error while loading page from http://apps.facebook.com/intentionbook :
Received HTTP error code 500 while loading http://www.intentionbook.com/

Do you have an idea of what's wrong ??

Thanks

I do not know. Your web server should have an error log which might tell you what's wrong.