Facebook SDK login issue with facebook api

Maybe this question was answered before me, but I can´t find it and it is killing me.

I have installed the newest version of Unity and Facebook SDK and trying the example Smasher, and finally made it compiled for android.

Problem is that whenever I tried to login in the game, it send me to the facebook api and it doesn't login in my game.

Checking another questions in the forums I discovered that if I uninstall the facebook api, the game calls my Development page and it sincronyse perfect.

Why this is happening and how do I solve it.

Thanks in anticiaption