Facebook Flash App (Desktop) Browser Descrepancies / OAuth Error. Why?

I am building a flash game that I have embedded in facebook. The actionscript api to login through facebook is the Player.io (Yahoo Games Network) as3 library. Here is a link to the current game: http://ift.tt/1DKzlup

It seems to work fine in Firefox browser (I'm using Windows 7), but then when I try to go to the game in Chrome or IE I get redirected to an error page with this text:

{ "error": { "message": "Invalid redirect_uri: Given URL is not allowed by the Application configuration.", "type": "OAuthException", "code": 191 } }

When it goes to the error page the url in the address bar begins with http://ift.tt/1dOxVCU.... I am not sure why it is being redirected here. but the authentication shouldn't happen until the "facebook login" button is clicked so I don't know why I would be getting OAuth errors before even landing on the page. Does anyone know what could be the problem here?