Ok, so I am trying to set up Facebook Connect (the sociable version not the WP version) but instead of having the 'members' profiles go to the default Facebook connect profile I want them to go to the WordPress author page. I have managed to change all of the links to that they go to ?author=XX instead of ?fbconnect=myhome etc..
However, I also want to use permalinks. So, pointing to ?author-XX works fine when the author id is of an author that was created not using Facebook connect. When you go to ?author=XX for a FB Connect user it redirects a permalink structure that looks like this: /author/FirstnameLastname. However, the page comes up as a 404 error.
Now, Facebook connect sets the nicename as a FB_FACEBOOKID and what so the author page should be a /author/FB_FACEBOOKID but that also returns a 404 error.
The really odd part is, if I turn off the permalink structure, and go to ?author-XX for a FB Connect user, the author page comes up just fine.