vBulletin Facebook App Troubleshooting - updated 22nd Dec '11

[Lynne]

If, when trying to access your facebook app, you get the error:

Error
Error while loading page from YourSite.com
Empty response received.

Make sure your Canvas FBML/iframe is set to iframe, not FBML. This option does not show up for everybody! But, if it is there, it is under the "Advanced Settings" in two places:

* Under "Migrations" look for "iframe Page Tab:" and make sure it is set to Enabled (I believe default is Disabled)
* Under "Canvas Settings", make sure to select iframe instead of FBML.

[Trevor Hannant]

Unable to login to your forum via the FB App:

Make sure you've installed the '/product-vbfbfriends.xml' product and configured the options here:

AdminCP > Settings > Options > Facebook Application Options



Blank page when trying to access your App:

This generally occurs because of an incorrect URL. Open the Facebook App config.php file and check that the following settings are using https:// and not http://

- FACEBOOK_CANVAS_URL
- FACEBOOK_APP_SITEURL

Also ensure that you're using the correct URLs here and that they have a trailing slash:

FACEBOOK_CANVAS_URL = the app location on Facebook itself - https://apps.facebook.com/your-app-name/
FACEBOOK_APP_SITEURL = the location of the facebook files on your server - https://www.yourdomain.com/path/to/fb-app/files/

[Trevor Hannant]

As the Facebook App uses the same API functionality that the Mobile Apps use, the following link is valid for troubleshooting any issues with this:

Basic API Troubleshooting Guide

Please ensure you check these items as part of your troubleshooting before posting in the forums or raising a Ticket.

Thanks!