A few weeks back, Twitter made some changes to their service.
Unfortunately, these changes caught me on the hop slightly, and Ambientweet (which hasn’t been receiving a lot of love recently, I must admit) stopped working.
Happily, I have now released version 1.1.2b7, which fixes these problems, and resumes normal service.
It appears that there may also be a slight problem with the auto-update mechanism at the moment. I’m looking into this, but if for any reason you have trouble getting your existing copy of Ambientweet to update, I would suggest simply downloading it again from our beta software page.