Access denied because the specified directory is not public

[pluviosilla]

I've followed all the steps in this article: http://www.intowindows.com/how-to-change-teamviewer-access-control-settings/. In particular, I:

• Extras
• => Options
• => Advanced
• => Advanced settings for connections to this computer
• => Access Control
• => Full Access

I am able to transfer files from my Windows machine to my Ubuntu (Linux) machine but not from Ubuntu to Windows. I get the "Not a Public Directory" error every time I try, and configuring Advanced Settings in Extras has zero effect.