I had a MacOS permissions issue with a .scriv file I had placed in Dropbox. The file would not open in Scrivener for iOS until I changed its permissions in MacOS (OS x El Capitan Version 10.11.5).
Here’s what happened:
Scrivener for iOS showed the .scriv in the Projects list. This is a file I’d created in MacOS and had been working on since June; but when I tried to open it in Scrivener for iOS, it would not open.
This is the error message I got:
Invalid project. The project cannot be opened because it does not contain a valid binder structure file.
I looked at the file’s permissions in MacOS (command + I) and saw that everyone was Read Only. I changed it to Read and Write and was able to open the file.