Cakephp Facebook Connect using Nick Baker's plugin : Error=> FB Dosen't exist

I am working on Nick Baker's CakePHP Facebook plugin. I am doing exactly as he has described in his screencast http://tv.cakephp.org/video/webtechnick/2011/01/12/nick_baker_--_facebook_integration_with_cakephp

But when I am trying to get the currently logged in user $this->Connect->user() using the Facebook.Connect component, i do not get any return value.....

When I debug the current session, (debug($this->Session);), i get the following :

app/app_c开发者_如何学Controller.php (line 10)

SessionComponent Object (

[__active] => 1
[__bare] => 0
[valid] => 
[error] => Array
    (
        [2] => FB doesn't exist
    )

[_userAgent] => 36267ef3c9f36ab07ac8e68d1deb03aa
[path] => /sharefaredev
[lastError] => 2
[security] => medium
[time] => 1301436341
[sessionTime] => 1301448341
[cookieLifeTime] => 720000
[watchKeys] => Array
    (
    )

[id] => 
[host] => localhost
[timeout] => 
[enabled] => 1

)

Where does the error come from? I'm not able to make that out.

Please help! Thanks in Advance :)

Have you checked facebook's app settings to ensure that App Settongs > Website > Core Settings reflect your current working site?