This helped with fixing the first two errors received when posting:

http://wordpress.org/support/topic/error-can-only-modify-connections-owned-by-this-application

First error:

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”}

Second error: Jump to post “Test for wp, again”