Hey, sorry for necroing this thread - but I figuered it has value for someone else googling the same issue.
I just encountered the same problem. I tried moving each individual folder, and realized that the problem was a “.” in the name of a folder. It seems Windows was confused by it, thinking it was a file name extension or something.
Everything but that folder worked fine to transfer, and after renaming it (in the Octa, windows couldn’t do it) everything works as it should!