copying from from OS X to a Samba server fails, using Cyberduck instead

The operation can’t be completed, because you don’t have permission to access some of the items.

Did you come across that error message before? I did, more than once.
Today I started using Cyberduck to copy over to the other side, but now as SFTP server. That’s almost as nice, at least it looks like it’s not going to fail that silly.