I'm having same issue on Mac Version 6.0.16 (451862 App Store) -- just adding my info in case it helps someone debug this. I have a file containing encrypted text that I routinely update from different clients (Mac, Windows, and iOS). Just recently I discovered the text was missing when I decrypted on Mac. Once I calmed down from my initial panic, I accessed the file from iPhone, saw the text was still there, and copied for safekeeping. I'm still on OS X 10.9.5.