I've installed boxcryptor 2.9.526 on Win 10 (latest updates and version).
Local account with one device (1&1 online drive) connected.
Stable 50 Mbit internet connection without any reported connection losts during copying.
By copying files from PC to boxcryptor folder (drag and grop via explorer) some of the copied files have suddenly a size of 0kB. So the copying process was not succesfull but without getting any error messages.
Different trials produce different files. The files are from the same type (*.jpg), have a similar size and all equiped with the same Access rights.
Has anyone an idea how to solve that?