Thread:Extension talk:TweetANew/Simply won't work/reply

Thank you for reporting this - helpful in improving the extension and documentation. :)

You do you want to have both read & write for your access token as well by selecting Read and Write as the Application Type under your application's Settings tab.

Also, you may want to redownload or update the checkout of the extension if you downloaded it a couple days ago. There was a bug in a lib file that was caught after it was in the live extension for a few hours.