Initially I installed only the JFBConnect Extension and was able to get Facebook, Twitter buttons on the registration page. Yesterday I installed JLinked and now the buttons have disappeared. Update: I ended up uninstalling JFBConnect to ensure it was not conflicting with any other plugin on my system. I reinstalled JFBConnect and everything worked again as it should. The login modal appeared with my Facebook and Twitter buttons. On my registration page Register with Facebook and Twitter appeared at the top just above the words, "User Registration". I then went to install JLinked. Right after that, I tested the Registration page. The Register with Facebook and Twitter Buttons were gone. Any Ideas??
Please do it in the reverse order: Install JLinked (or leave it installed) and then install JFBConnect again. You don't need to uninstall either if they're both already installed.. just re-install them using the installer.
The issue is that there are some shared files between the two extensions and JFBConnect has the latest versions. We're working to fix that problem in the next major release, but for now, just install JFBConnect last to make sure everything is up to date.
Sorry for the confusion, and I hope that helps get you going,