Hi all, I'm a new Destiny player and I'm having issues joining/inviting my roommate to a fireteam. Whenever I try to change my fireteam privacy settings (to "invite only" or "friends only"), it notifies me that I need PlayStation Plus in order to do so, which is strange, since we were able to join up without problems just days ago. Is there a certain setting I'm missing, or is PS Plus really required to play story missions with coop? We are both playing with new consoles and on the same network (I'm wireless and he's wired). Any help is greatly appreciated!