Once you are logged in, that's right, you see that fb:// meaning you are connected.
The only thing you have to do is go again to facebook folder in your Location panel and you will see that 1 folder will appear with your facebook name, and clicking in your name you will see 2 more folders: Albums and Friends. In Albums you have your own folders in facebook and in Friends all the friends with their folders if they allow to share them with Apps. All is very visual.
In fact you can see all the process to login and how these folders appear in the release note that comes with the new version, under Facebook label. Review it and you will see:
http://www.cerious.com/release_notes9.shtmlJust take your time and you will succeed. In my opinion Thumbsplus is a great program for people that like photography’s world with lots of features, meaning you have to spend some time to find and learn some of them but is just that. If your main focus is Facebook world probably you will find other specialized software better for now. I think is a new subject for Thumbplus people and users and takes time for all of us to be adapted. In thumbplus community, so far, I didn't detect too much interest in FB, but it can change in the near future.