I am trying to publish Facebook Timeline actions using the app access token instead of the user's access token (so that I don't have to deal with expiring sessions), as described here:
https://developers.facebook.com/docs/opengraph/using-app-tokens/
This was working fine, but stopped working a few days ago, now giving me this error:
The client token cannot be used for this API
Any ideas on why this is happening, and how to fix it?