I've tried using multiple FTP servers. So far, I've tried:
smallFTP
3cdaemon
a macbook Pro with os x built in ftp server functionality enabled
With every one of those setups, I was able to connect to the FTP server from a different computer using the same credentials that I was specifying in save manager's ini, but unable to get save manager to connect. I am at a complete loss as to why I can't get this working.
I can also see that there are other posts here saying the same thing. There are even a couple where people are reporting that it was working before, but failing, with the same error message that I am getting, now. That is why I'm hoping that maybe some of those that have it working over wifi can shed any light on what I may be doing wrong.
I think the other thing that might be helpful would be if the author could patch the program to spit more verbose debug info out to the screen, or (better yet) to a file. This way, we would know more about what is going on. Also, now that I think about it, I might try to do a packet capture on the FTP server machine tonight, and see if the NDSlite running save manager is trying to contact it at all (I have yet to see anything in the FTP server logs, but maybe the packet capture will tell me more).
Anyhow, once again, thanks for any help you can provide.