Facebook implementation wp8 cocos2d 3.5

Hello,

Is there someone that implemented facebook with the facebook c# .net sdk ?
My game crashes when I login and it’s only if someone had this problem how to solve it.
I have configured my app as it is explained in the official site http://facebooksdk.net/docs/phone/config/

Thank you

It’s solved, there is a problem in the implementation of the App.xaml.cs. This version solves it: http://pastebin.com/eMw7qsna