An FTP error and fix

Of all the things you'd expect to "just work", the venerable ftp should be near the top of the list. But, it's been giving me some trouble lately. I've been having to upload some files to another organization's servers. and getting strange errors like this one:425 Unable to build data connection: Invalid argumentIt took a bit of digging, but in this case it turns out that the extended EPSV and