Facebook API unknown exception with api call after login

Question

after successful facebook login we get an exception:

Fatal error: Uncaught GraphMethodException: API calls from the server require an appsecret_proof argument thrown in .../.../lib/base_facebook.php on line 1238

The code is:

$user = $facebook -> getUser();
if(!$user) {
 //redirect etc. stuff here
}
else {
 $me = $facebook -> api("/me"); //we get the exception here
}

Anyone seen similar error? I cant find any info on this error anywhere.

Thanks

Answer 1

As I posted here, this appsecret_proof thing was added to the latest version of PHP SDK quite recently. So my guess is that your App Setting for appsecret_proof is enabled, but you are not using the latest version of PHP SDK so the appcesret_proof is not generated.
You might want to check your setting at App Dashboard > Setting > Advanced > Security.

EDIT: 2013-08-09
Now they have [official document][3].

Answer 2

I got similar error to you. And I don't know how too. But if you don't really need OAuth login. You can disable it in setting>advance.