I don't think that the protocol layer should be affected by any special characters in the data, but it might depend on the software you're using. I used WinSCP many years ago but I think (hope) there are better alternatives for Windows users at this point. Maybe try Filezilla, or PuTTY SCP (PSCP) if you are not afraid of the command line.

impact may be right about why MyDocs is not available over USB.