Appears to be the same problem: http://wordpress.org/support/topic/plugin-facebook-failed-posting-to-timeline-because-the-access-token-expired?replies=17
The difference is that in the scheduled post we’re not there to see the error message. While we are not on the dashboard of WordPress unix session expires (do not know why) and gives error when it should be published on Facebook.
Maybe… I set it to post in the future by 5 min and it failed. after that I was still able to publish manually and have it post to Facebook our test wordpress server. Token had not expired, at least not error.
But it is true, the expired token could also make this fail.
It really is difficult to define the circumstances in which these problems are occurring.
Do you receive any errors? Can you paste the errors in here? Thanks
I did not see any errors in any of the wordpress screen. Is there some special place I shou;ld look for errors?
Since the problem happens with scheduled posts, the error message does not appear.
@martong, you use WPMU?
I’m not sure if this is the same problem I’m having but it seems to be the scheduled posts that don’t get posted. But every time I see unposted posts, I go into the settings page for the facebook plugin and in the Post to Fan Page dropdown, my page isn’t selected anymore. It’s on [disabled].
@calleynye, happened to me exactly the same thing. Now is working.
Tried the code change from zazinteractive, Still not working for timed posts. Just using WP 3.4.1, not WPMU. When I deactivate Facebook and activate SFC it works for timed posts. When using Facebook plugin manually publishing a post causes post on Facebook page and specified fan page.
Yes, this post was written because Scheduled posts are not getting posted to Facebook. It is only a problem for Scheduled Pasts, not other types.