Removing the @ solved it for me as well.
Martin,
It seems to show a settings saved message as normal.
As an additional note, I reset all my keys on the dev.twitter (Consumer and Access keys and secrets) and no improvement.
Martin,
I just updated to 1.3.12 and receive the ‘Problem Retreiving Tweets’.
I checked the HTML source to find:
<!– Error: 34 – Sorry, that page does not exist –>
