Transfer Fails with some files

[MxxCon]

REST 100
502 rest is not implemented.
--
PASV
502 pasv is not implemented.

well, that's a pretty ftp server if you ask me
your only other solution is to properly map data connection ports.
go to preference, "Proxy/Firewall/Ident" tab, and enable "Limit local port range to:".
deside what ports to enter there. should be about 100 ports range. and then forward those same ports in your router to your computer.