I created a Facebook page tab application running on http://localhost:8000/. I added this application to a Facebook page which I administer.
When I try to load the app in the page tab, nothing shows up. It is completely blank. There is no iframe in the content area as there should be. No request is made to my Web server. Why is this?
How do I debug this?
Check you app settings and make sure you have the correct values there. Also try (just for testing) to run your site on port 80 with localhost programmed into the app settings too.