When Flying in the Vertibird to Mass Fusion with Proctor Ingram the aircraft disappears mid flight and any attempt to reload the game to a previous save crashes you out entirely. After going away and doing other things for a while I came back to try and board it again to find that the Vertibird isn't even spawned and the pilot is just floating in the air in a "T" pose. I don't know what else to do to try and fix it, and I can't complete the main story because of it.

Please Help!