FIRST off it is not a bata no matter what ubisoft says to make up for all the mistakes they made in making it, like the glitches and the clearly not thought out armor buffs in the skill tree that only go to 3 armors despite having so many armor sets, or the bow switching problem were you have to go in your inventory to switch your bow to light, hunter,and predator bows over and over, then there's fact that in some of the storyline and missions there would a choice i did not like. And felt it was very limited, ubisoft should be ashamed that they put this game out far before it was ready.

@mattrogerthat try going back to prepare save and then save it to see if your saved data is curated if so delete it and resave and try the mission again.