There were some well-publicized issues posting to Facebook for all users, including from Facebook.com, a few hours ago when you created this support thread. I believe the error you experienced was a temporary issue on Facebook’s servers, not an issue isolated to the Facebook plugin for WordPress.
Failed posting to your Facebook Timeline. Error: {“message”:”(#100) You haven’t enabled Explicitly Shared for this action type (331247406956072) yet. Please update your Open Graph settings in the App Dashboard”,”type”:”OAuthException”}
I am still getting this error when posting. Do you know why?
Zelda: you do not have an approved Open Graph action with the explicitly shared capability granted. The Enable Open Graph option in the Social Publisher settings should not be checked until you successfully set up a Facebook application with Open Graph actions and capabilities and have that action approved by Facebook.