If someone else is stuck at the end of Chapter 3 and isn't able to see the
cutscenes, there's an Arcturus walkthrough on Niconico that shows all the cutscenes, around episode 90. Not optimal, but at least it shows what the actor errors are hiding
Speaking of which, I tried getting to the end of that cutscene but I ended up with another crash, this time even sooner than last time. It's really a shame the game doesn't let one save during those events, I hope I can get to the final chapter in one of the next attempts.