Have the same error furi, I also tried going back further and further to no avail. Lost around 50 hours too. Submitted a bug report, hopefully they can figure something out.
Edit: Also tried going forward past the area that was causing it, still causes corrupted saves in a completely different area.
yea its a real shit situation, i think people with this issue are going to have to wait for others to get to this point in the story so the complaints and issues with saves/loading become more aware
