Error message "no spawn entity"

[Saltyman]

It happens in cairn bay after I get past luke and the reborn and go through the vents and past the elevators...right at the bottom of the last elevator I get the error message right after the elevator door opens and a loading screen appears. I simply cannot progress through the game and it upsets me so... If anyone else is having a problem like this I would like to know.

I have run it in safe mode and I still get the same message. I don't know what else to do. Any help would be apreciated...

Thank you

Saltyman