There is no way to view the waypoints within the WoWclient. Paths are recorded, then played back. This is a 'blind' operation. Because of this, after recording, the good profile writers will test it substantially before publishing it. Since nodes don't always pop in the same place, adequate testing can take some time.
You can go into the file it creates and fix them up manually if you need, but there's no easy way to see which waypoint(s) need repair.
cheers
CJ