They probably have opted out of the Facebook API, as [[#What effect does it have when a friend unchecks the Terms of Service box?|described above]]. Tell your friend to go to http://www.facebook.com/privacy.php/?view=platform&tab=all other and make sure that the first radio button, labeled ''Share my name, networks, and list of friends, as well as the following information'' is '''selected''' – this lets FMenu retrieve the friend's name. For complete notifications functionality, make sure that the boxes labeled ''Basic info'' and ''Profile status'' are checked as well.