login sourceforge.net with winscp

Hi:
I try to login sourceforge with winscp, and I am really new for both sourceforge and winscp. When I login, I always get the error msg:
Error skipping startup message. Your shell is probably incompatible with the application (BASH is recommended).

I have upload the ssh key to sourceforge account,and I change it many times , but don't work.

Should I do any setting to sf account or winscp?

and here is my login log:

. 2009-02-07 22:26:34.671 --------------------------------------------------------------------------
. 2009-02-07 22:26:34.671 WinSCP Version 4.1.8 (Build 415) (OS 6.0.6001 Service Pack 1)
. 2009-02-07 22:26:34.671 Login time: Saturday, February 07, 2009 10:26:34 PM
. 2009-02-07 22:26:34.671 --------------------------------------------------------------------------
. 2009-02-07 22:26:34.671 Session name: tianzhuqiao,bsmedit@shell.sourceforge.net
. 2009-02-07 22:26:34.671 Host name: shell.sourceforge.net (Port: 22)
. 2009-02-07 22:26:34.671 User name: tianzhuqiao,bsmedit (Password: Yes, Key file: Yes)
. 2009-02-07 22:26:34.671 Tunnel: No
. 2009-02-07 22:26:34.671 Transfer Protocol: SCP
. 2009-02-07 22:26:34.671 Ping type: -, Ping interval: 30 sec; Timeout: 15 sec
. 2009-02-07 22:26:34.671 Proxy: none
. 2009-02-07 22:26:34.671 SSH protocol version: 2; Compression: No
. 2009-02-07 22:26:34.671 Bypass authentication: No
. 2009-02-07 22:26:34.671 Try agent: Yes; Agent forwarding: No; TIS/CryptoCard: No; KI: Yes; GSSAPI: No
. 2009-02-07 22:26:34.671 Ciphers: aes,blowfish,3des,WARN,arcfour,des; Ssh2DES: No
. 2009-02-07 22:26:34.671 SSH Bugs: -,-,-,-,-,-,-,-
. 2009-02-07 22:26:34.671 SFTP Bugs: -,-
. 2009-02-07 22:26:34.671 Return code variable: Autodetect; Lookup user groups: Yes
. 2009-02-07 22:26:34.671 Shell: /bin/bash, EOL: 0
. 2009-02-07 22:26:34.671 Clear aliases: Yes, Unset nat.vars: Yes, Resolve symlinks: Yes
. 2009-02-07 22:26:34.671 LS: ls -la, Ign LS warn: Yes, Scp1 Comp: No
. 2009-02-07 22:26:34.671 Local directory: default, Remote directory: home, Update: No, Cache: Yes
. 2009-02-07 22:26:34.671 Cache directory changes: Yes, Permanent: Yes
. 2009-02-07 22:26:34.671 DST mode: 1
. 2009-02-07 22:26:34.671 --------------------------------------------------------------------------
. 2009-02-07 22:26:34.827 Looking up host "shell.sourceforge.net"
. 2009-02-07 22:26:34.827 Connecting to 216.34.181.119 port 22
. 2009-02-07 22:26:35.701 Server version: SSH-1.99-OpenSSH_5.1
. 2009-02-07 22:26:35.701 We claim version: SSH-2.0-WinSCP_release_4.1.8
. 2009-02-07 22:26:35.701 SSPI: acquired credentials for: Tianzhu@Tianzhu-PC
. 2009-02-07 22:26:35.701 Constructed service principal name 'host/shell.sourceforge.net'
. 2009-02-07 22:26:35.701 GSSKEX disabled: No credentials are available in the security package

. 2009-02-07 22:26:35.701 Using SSH protocol version 2
. 2009-02-07 22:26:36.013 Doing Diffie-Hellman group exchange
. 2009-02-07 22:26:36.933 Doing Diffie-Hellman key exchange with hash SHA-1
. 2009-02-07 22:26:37.619 Host key fingerprint is:
. 2009-02-07 22:26:37.619 ssh-rsa 2048 b4:c5:6c:36:f7:ad:2c:23:52:e1:84:3e:77:61:5d:59
. 2009-02-07 22:26:37.619 Initialised AES-256 SDCTR client->server encryption
. 2009-02-07 22:26:37.619 Initialised HMAC-SHA1 client->server MAC algorithm
. 2009-02-07 22:26:37.619 Initialised AES-256 SDCTR server->client encryption
. 2009-02-07 22:26:37.619 Initialised HMAC-SHA1 server->client MAC algorithm
. 2009-02-07 22:26:38.462 Reading private key file "C:\qiaotz\download\sourceforge-ssh\prt.ppk"
! 2009-02-07 22:26:38.462 Using username "tianzhuqiao,bsmedit".
. 2009-02-07 22:26:39.055 Offered public key
. 2009-02-07 22:26:40.615 Offer of public key accepted
! 2009-02-07 22:26:40.615 Authenticating with public key "tianzhuqiao@shell.sourceforge.net"
. 2009-02-07 22:26:40.630 Prompt (2, SSH key passphrase, , Passphrase for key "tianzhuqiao@shell.sourceforge.net": )
. 2009-02-07 22:26:46.153 Access granted
. 2009-02-07 22:26:46.449 Opened channel for session
. 2009-02-07 22:26:46.761 Started a shell/command
. 2009-02-07 22:26:46.761 --------------------------------------------------------------------------
. 2009-02-07 22:26:46.761 Using SCP protocol.
. 2009-02-07 22:26:46.777 Doing startup conversation with host.
. 2009-02-07 22:26:46.777 Skipping host startup message (if any).
> 2009-02-07 22:26:46.777 echo "WinSCP: this is end-of-file:0"
! 2009-02-07 22:26:47.385 You don't have an active shell at this time. For basic file transfers and
! 2009-02-07 22:26:47.385 management, use web.sourceforge.net -- it allows rsync, sftp, and scp access.
! 2009-02-07 22:26:47.385 If you would like to create a shell, use ssh to login using a USER,PROJECT
! 2009-02-07 22:26:47.385 username with the "create" command. If you tell ssh to allocate a tty
! 2009-02-07 22:26:47.385 (e.g. using -t), an interactive shell will be opened when the create is
! 2009-02-07 22:26:47.385 done. Otherwise, the create command will exit when the shell becomes
! 2009-02-07 22:26:47.385 ready for use. An example create that enters the shell when ready:
! 2009-02-07 22:26:47.385 ssh -t USER,PROJECT@shell.sourceforge.net create
. 2009-02-07 22:26:47.385 Server sent command exit status 1
. 2009-02-07 22:26:47.385 Disconnected: All channels closed
* 2009-02-07 22:26:47.385 (ESshFatal) Connection has been unexpectedly closed. Server sent command exit status 1.
* 2009-02-07 22:26:47.385 Error skipping startup message. Your shell is probably incompatible with the application (BASH is recommended).

Well have you red the message you can see in the log?

You don't have an active shell at this time. For basic file transfers and
management, use web.sourceforge.net -- it allows rsync, sftp, and scp access.
If you would like to create a shell, use ssh to login using a USER,PROJECT
username with the "create" command. If you tell ssh to allocate a tty
(e.g. using -t), an interactive shell will be opened when the create is
done. Otherwise, the create command will exit when the shell becomes
ready for use. An example create that enters the shell when ready:
ssh -t USER,PROJECT@shell.sourceforge.net create