FOR THOSE WHO ARE HAVING TROUBLE WITH YOUR SAVES!
If you have many saves like I do, look for the latest one that works and continue from there, until Ncrow fixes the issue. The saves that work for me are quite recent, I think from the 4.0 update, so try to find a really recent one at least.
I know it's rough on us all, and I know playing through stuff you've already done can be obnoxious, but this is currently the only way to somewhat get around the error.
I hope this helps