The same thing happened to us. I thought that there was someone from their side signed up at one point, but maybe I was wrong. Anyway, after a while of no one joining, I just cancelled the match. Good luck in drumming up players for the opposition. 
Someone join the Dragonlords & join this match
Sort:
http://www.chess.com/groups/team_match.html?id=12876
We've been waiting forever to start this team match & no one has joined their side!