I have sided with the railroad and have reached the stage where I am supposed to talk to father. I cannot travel to the CIT ruins to talk to him. Whenever I try, the game crashes. I have tried approaching him from several angles, and it always crashes when I get close. Fast travel to that area also crashes the game. I see no way of completing this quest.

What is the error code that you get when the game crashes?

CE-34878-0, at least that is what I got when I tried walking there now. I don't know if I have gotten the same error code every time I have tried, because I have approached the area from numerous angles and also by fast travel, and I didn't write the code down. I just submitted the PSN error report with video.