There's a major bug in Java 7 that prevents ALL FTP transfers on Windows machines!
We've reported it to Oracle at
It's been accepted, but marked as "low priority". Clearly, for anyone using FTP on Java/Windows, developers and users alike, it's certainly a very high priority.
PLEASE VOTE the bug up - .
We're hoping to get it into the . It's not far off so your vote could make a difference.