[dchoi]

Originally Posted by Digital Jedi

That depends on what you put as your Base Domain. Base domain is what you asked for when you purchased your domain name.

yoursite.net

Callback URL is the full URL to your forums.

http://www.yoursite.net/forums

Or wherever your forums are located under your domain. Could just be

http://www.yoursite.net

My base domain is davidchoimusic.com so that's what I put in there. However, I still get the same error message. Also, in what tab do I put the callback URL? The reason I'm asking is because there are several instances of the term "callback URL" on the Facebook App Edit page. So to clarify, in which of the following tabs do I enter the callback url?

Basic
Authentication
Profiles
Canvas
Connect
Widgets
Advanced