winSCP 5 "500 invalid PORT command

. 2011-09-06 11:02:45.073 WinSCP Version 5.0.0 (Build 1431) (OS 5.1.2600 Service Pack 3)
. 2011-09-06 11:02:45.073 Configuration: HKEY_CURRENT_USER\Software\Martin Prikryl\WinSCP 2\
. 2011-09-06 11:02:45.073 Login time: den 6 september 2011 11:02:45
. 2011-09-06 11:02:45.073 --------------------------------------------------------------------------
. 2011-09-06 11:02:45.073 Session name: xxx@xxx.zzz.zz (Modified stored session)
. 2011-09-06 11:02:45.073 Host name: ftp.zzz.zz(Port: 21)
. 2011-09-06 11:02:45.073 User name: xxx(Password: Yes, Key file: No)
. 2011-09-06 11:02:45.073 Tunnel: No
. 2011-09-06 11:02:45.073 Transfer Protocol: FTP
. 2011-09-06 11:02:45.073 Ping type: C, Ping interval: 30 sec; Timeout: 15 sec
. 2011-09-06 11:02:45.073 Proxy: none
. 2011-09-06 11:02:45.073 FTP: FTPS: None; Passive: No [Force IP: No]
. 2011-09-06 11:02:45.073 Local directory: \\Lager\expen\E-redovisning\Scannat, Remote directory: home, Update: No, Cache: Yes
. 2011-09-06 11:02:45.073 Cache directory changes: Yes, Permanent: Yes
. 2011-09-06 11:02:45.073 DST mode: 1
. 2011-09-06 11:02:45.073 --------------------------------------------------------------------------
. 2011-09-06 11:02:45.089 Connecting to ftp.zzz.zz ...
. 2011-09-06 11:02:45.089 Connected with ftp.zzz.zz. Waiting for welcome message...
< 2011-09-06 11:02:45.136 220 Microsoft FTP Service
> 2011-09-06 11:02:45.136 USER xxx
< 2011-09-06 11:02:45.167 331 Password required for xxx.
> 2011-09-06 11:02:45.167 PASS *********
< 2011-09-06 11:02:45.183 230 User xxx logged in.
> 2011-09-06 11:02:45.183 SYST
< 2011-09-06 11:02:45.214 215 Windows_NT
> 2011-09-06 11:02:45.214 FEAT
< 2011-09-06 11:02:45.230 211-Extended features supported:
< 2011-09-06 11:02:45.417  SIZE
< 2011-09-06 11:02:45.417  MDTM
< 2011-09-06 11:02:45.417 211 END
> 2011-09-06 11:02:45.417 OPTS UTF8 ON
< 2011-09-06 11:02:45.433 501 option not supported
. 2011-09-06 11:02:45.433 Connected
. 2011-09-06 11:02:45.433 --------------------------------------------------------------------------
. 2011-09-06 11:02:45.433 Using FTP protocol.
. 2011-09-06 11:02:45.433 Doing startup conversation with host.
> 2011-09-06 11:02:45.433 PWD
< 2011-09-06 11:02:45.464 257 "/xxx" is current directory.
. 2011-09-06 11:02:45.464 Getting current directory name.
. 2011-09-06 11:02:45.464 Retrieving directory listing...
> 2011-09-06 11:02:45.464 TYPE A
< 2011-09-06 11:02:45.480 200 Type set to A.
> 2011-09-06 11:02:45.480 PORT 10,42,1,69,126,108
< 2011-09-06 11:02:45.511 500 Invalid PORT Command.
. 2011-09-06 11:02:45.511 Could not retrieve directory listing
. 2011-09-06 11:02:45.511 Retrieving directory listing...
> 2011-09-06 11:02:45.511 TYPE A
< 2011-09-06 11:02:45.542 200 Type set to A.
> 2011-09-06 11:02:45.542 PORT 10,42,1,69,126,110
< 2011-09-06 11:02:45.558 500 Invalid PORT Command.
. 2011-09-06 11:02:45.558 Could not retrieve directory listing
* 2011-09-06 11:02:45.558 (ECommand) Error listing directory '/xxx'.
* 2011-09-06 11:02:45.558 Could not retrieve directory listing
* 2011-09-06 11:02:45.558 Invalid PORT Command.
. 2011-09-06 11:02:46.933 Startup conversation with host finished.
* 2011-09-06 11:02:46.948 (Exception) UNC paths are not supported.