For those folks having issues FTPing from within the mod, try creating/generating the feed file, then manually FTPing with your web browser or FTP client. Instructions on how to manually FTP are on the GoogleBase support site.

http://base.google.com/base/FTP.html
http://base.google.com/support/bin/topic.py?topic=2928

Then at the very least you will know that part is working and will have a record of correct FTP server authentication parameters to experiment within the mod's admin config.

Woody