Alex, i noted you marked the previous thread on adding profiles as solved, however I *am* using the latest version of Social.
I click on “Sign in with Twitter” and the pop up windows appears, I click Authorise App and the windows gives a confirmation and then redirects back to the plugin config page.
There *looks* like something is added, but the account has no profile pic and trying to broadcast anything fails. pic here: https://i39.tinypic.com/dc5xj9.jpg
Also, twitter tools fails to read tweets from the twitter feed.