There's only a few issues that can be causing this:
Facebook every once in a while gets 'out of sync' with the site's its grabbing information from. We've put many checks in the code to prevent this error from occurring in the past, but it's possible we missed one. The best way to test if this is the case is to:
- Log out of your site and then log out of Facebook.
- Close your browser down (this removes any session based cookies).
- Open it back up and try logging into your site
If the problem immediately appears, it's not a session issue, it's actually a Facebook application issue.
Try recreating a Facebook application (<!-- m --><a class="postlink" href="
www.facebook.com/developers">
www.facebook.com/developers) and only fill in the Canvas URL and Connect URL's as your home page. Do not change any other settings. Grab the API/Secret keys and test JFBConnect with those. If it works correctly, then start slowly modifying the application to determine which switch was causing that issue. If you find it, and it's a 'required' setting for you, let us know. We'd love to prevent this problem in the future.
FacebookRestClientException at error line 2458
