Facebook invite Canvas page does not load

I've implemented Facebook Invite as follows: - http://www.jobwalk.com.au/invite.aspx

You can login via Facebook and go through the steps (no database update) from: - http://www.jobwalk.com.au

The problem is, when I select someone and press Send Invite and in the final stages, it does not load the Callback or Canvas URL. It just has a Facebook page with a Blank Page in its IFRAME.

Facebook application values

• Site URL: http://www.jobwalk.com.au/
• Canvas URL: http://www.jobwalk.com.au/callback/
• Canvas FBML/iframe: iframe

Does anyone know what wen开发者_如何转开发t wrong here?

Thank you.

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You need to try with google chrome, and set debug code option (developer tools), probably some host forwarded an errorneous response to another other server, (not client).

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I guess that you need a css in body because this only support 520px of width max , I'm working too in iframe facebook, I dont know if change between files type index.php or index.html