Invalid options 'ssh_cmd', 'more' or bad combination of options at sftp.pl line 2

It may be that the 'more' and 'ssh_cmd' options don't work on Windows - I'm almost certain 'more' doesn't work. If salva drops by (as he usually does) he would be able to give you more definitive advice.
I've only ever used this module for 'get', 'put', 'del', 'ls' and maybe a couple of other commands that I can't recall at the moment. For those purposes I've found it to be excellent.

Cheers,
Rob