Same here, crash on final (4) skill usage, just before the glowing ball hits his wings.Tried updating the graphics driver and set all graphic options to low, as it seems to be a problem with the particle effect of the impact. Still crashing. At least there are checkpoints in the instance and you do not have to do everything again. Also deleted local.dat, did not help EDIT: No crash, just the cut scene loading very long when you did not download the full patch. The cut scene should be downloaded when loading the map instead, as it feels like a long freeze/crash. Or at least add a loading bar for it.