Can't open & update old project to version 2.7


Just updated to the 2.7 version. When I’m opening my projects it asks me to update the project to 2.7 version. I click update and a backup file is made in the same folder as the old project.

And i get “There was a problem trying to read original data from folder…”

As it stands now i can’t open any of my Scrivener projects so happy for any help.
Thank you!

Would it be possible to send one of your projects, that will not update, to our support address? There aren’t any widespread issues with the updater, so the solution will likely require very specific help.