Update - I tried once again, this time keeping a PING going to the FTP server. It seems to be helping.
I opened a command prompt window, and typed: "ping -t ftp.creamware2.de" (without the quotes). This keeps continuously pinging the Creamware server. Maybe it works as a keep-alive or something, but as I write this, I'm up to 70% of the first file, my best result so far!
Posting in case it helps anyone else
