Ah, that's not the end. One of my testers encountered this crash too, but I've not yet been able to reproduce it, and it seems to vary depending on how you played. Thanks for playing, though!
Edit: I've now found how it can occur (though not yet been able to fix it) - it occurs if you move the mouse somewhere in the moments following the last bit of dialogue in that cutscene, before control is returned to the player. That includes when moving the mouse while you click to dismiss the dialogue.