That happened to me Rantz, TWICE. Well not that exactly but similar. I had got to redcliff and was just letting it auto save. Well then during the event it glitched out and wouldn't finish the event. It auto saved during the event so I had to restart it all. Another time my file got corrupted around the same point. OH YEAH also at the end. Don't save like right at the final battle it wont allow you to finish it. You have to save right before and just reload that save if you die.
Great game but pretty glitchy.