I can connect to my Ubuntu Server VM just fine using FTP on Transmit or SSH via Terminal, but I can't connect using FTP. Whenever I try to connect using Transmit, I get this error:
Error -157: invalid reply from server
Maybe I am missing software on the VM? I don't really know. I'm not a noob at Linux, but I'm not great either. So simplifying your answer would be great.
My host machine is a MacBook running MacOS Sierra