The same thing happened to me and my crew. It was three (3) of us on the fireteam, and only one of us was able to progress past 13! This is some straight BS!!! I stayed up until about 5:00 a.m. the day after launch trying to get past it and nothing that I did worked. I even tried to do it on the "Match Making" option and nothing! At this point, I'm over Destiny and any further DLC's, etc. They are trash, and I plan on spending my hard earned dollars elsewhere. #UpTheAcademy