I get really annoyed when I'm completing a mission and I accidentally run over the person who I'm supposed to return to. Like for example, in the horsebreaking mission I finally tamed this bitch of a horse. As I jumped the fence the horsehand decided to run directly underneath me, I go to the finish area and he tosses me off my horse to beat me up. So I hogtie him and then I bribe someone who saw me, I return, and he's gone. No more mission either. I also didn't complete it from the get go. And since I hadn't saved in awhile I really didn't want to go back to the beginning...