I have had a working Tweet This and had posted sucessfully a couple of days ago. Now when I post new or update on a failed "tweet this" I get
Tweet failed. Twitter returned HTTP 404. Check your OAuth settings and re-save this post to try again.
I have clicked on "Test Twitter OAuth" and it was successfull. I have a "Write Tweet" option but when I try to send a tweet I get "Tweet failed: Twitter returned HTTP 404."
Has the url needed for tweeting changed?