I've not checked to see if twitter tools was working since I updated the Oauth stuff. It seems that I had a problem that the application that I created was only set to read permissions. I've set to write, but now I still get Tweet post failed." when trying to tweet from the sidebar.
I just created a post, and set it to tweet. The link is regestered in bit.ly, but no tweet.
Any suggestions on how I can debug this further?