Need some help, the game seems to be bugged in that I can not jump from the vertibird on to the Mass Fusion building during the Brotherhood quest, any thoughts, anyone else have this problem?

What system? I had this problem and i saved and exited than it worked. But i'm on XB1...

I'm on a PC, tried saving, exiting etc but to no avail. It says hit "enter" to jump, I do and nothing happens. So frustrated because I want to finish and perhaps start a new character.