96ed986 created the issue

When I try to drag a folder or multiple files on the cyberduck window, it begins to upload them but, after a few, it shows an error:

Unable to build data connection: Connection refused. (this is in red)

and then, in the bottom part of the error window, it shows this:

200 PORT command successful
STOR m_DSC_0011.jpg
425 Unable to build data connection: Connection refused
PORT 169,0,0,2,193,193
200 PORT command successful
STOR m_DSC_3156.jpg
150 Opening BINARY mode data connection for m_DSC_3156.jpg
226 Transfer complete
PORT 169,0,0,2,193,194
200 PORT command successful
STOR m_DSC_1646.jpg
425 Unable to build data connection: Connection refused
PORT 169,0,0,2,193,195
200 PORT command successful
STOR m_DSC_3146.jpg
150 Opening BINARY mode data connection for m_DSC_3146.jpg
226 Transfer complete
PORT 169,0,0,2,193,196
200 PORT command successful
STOR m_DSC_3148.jpg
425 Unable to build data connection: Connection refused
QUIT
221 Goodbye.

The result is that not all the files are uploded good, an some files shows 0 kb dimension on the ftp directory.

If I try to upload all files one by one, it functions, but is so uncomfortable, especially for a large amount of files and/or directories.

Thanks in advance for your help.
Mario Caruso