Invalid OAuth Access Token

[bookert177]

First of all thanks a lot for your work!

Unfortunately every of my attempt fails by implementing your package into my salesforce instance.
The package is installed, all configuration steps are done but when I try to test the facebook connection I always get the same error message:
Received 400 from https://graph.facebook.com/me?access_token=null {"error":{"message":"Invalid OAuth access token.","type":"OAuthException","code":190,"....

I tried to find out what can be the reason for this by reviewing the facebook developer docu and the force one as well but couldn't find the reason. Can you help me?

[bookert177]

FYI when I'm testing directly via my Site URL I'll receive following visual force error:
Invalid integer: in":5180948}
Error is in expression '{!init}' in component apex:page in page facebookcallback: Class.FacebookToken.setAccessToken: line 59, column 1
Class.FacebookCallbackController.init: line 53, column 1

An unexpected error has occurred. Your development organization has been notified.