I am not sure if anyone else has come across this one. I get this error message (notification) at times and not on a regular basis. I guess, this has got something to do with Vanilla and Facebook API's. I click on the facebook login icon, enter the login credentials, once its validated I get this message ( on the page where you get the post on behalf , skip options ). Could you guys please take a look. Thanks. @X00 , @todd
Alternatively, set height and width on your window.open() call to property size this dialog if you have special requirements precluding you from using the SDK. This message is only visible to developers of your application."