Sftp connection

Hi guys,
we are testing SmartFtpClient and SmartFtpLibrary (trial license) in order to check if it is ok for our job.
Trying a SFTP connection what we obtain is this:
<blockquote class="ipsBlockquote">
[14:47:50] SmartFTP v5.0.1339.0
[14:47:50] Resolving host name "xxxx.xxx.xxx"
[14:47:50] Connecting to Port: 22
[14:47:50] Connected to xxxx.xxx.xxx.
[14:47:50] SSH protocol version reply. Client Id: SSH-2.0-SmartFTP
[14:47:50] SSH-2.0-Maverick_SSHD
[14:47:50] Starting SSH session. Remote Id: "SSH-2.0-Maverick_SSHD"
[14:47:50] Key Exchange Algorithm: diffie-hellman-group-exchange-sha1
[14:47:52] Server "ssh-dss" host key fingerprint: 53:BC:12:63:8B:C5:DC:6A:F5:75:17:44:E2:91:1A:5B
[14:47:52] Key exchange completed.
[14:47:52] Host Key Algorithm: ssh-dss
[14:47:52] Client to Server Encryption: aes192-cbc
[14:47:52] Server to Client Encryption: aes192-cbc
[14:47:52] Session HMAC: hmac-sha1
[14:47:52] Client to Server Compression: none
[14:47:52] Server to Client Compression: none
[14:47:52] Requesting service "ssh-userauth".
[14:47:52] RTT: 289.046 ms
[14:47:52] Authentication request. Method: none
[14:47:52] Received authentication banner message.
[14:47:52] Server supported authentications: password,publickey
[14:47:52] Authentication request. Method: password
[14:47:52] User authentication successful.
[14:47:52] SSH session established.
[14:47:52] Detected Server Software: Maverick SSHD
[14:47:52] Opening channel 0.
[14:47:53] Channel successfully opened (Local=0, Remote=0).
[14:47:53] Requesting subystem "sftp" (Local=0, Remote=0).
[14:47:53] Sending FXP initialization. Protocol version=6.
[14:47:53] SFTP packet with unexpected request id 0 received.
[14:47:53] SSH channel closed by client.
[14:47:53] Connect failed. Error=0x80004005
[14:47:53] Disconnecting.
[14:47:53] Þ6#[~OÑe{Ë
[14:47:53] È¡E ±SíeáDS§ˆÌOvÌqB+ÍiÉ7÷Úub“Gà×Ξ¹bcò=ÔÉX’¶_¡ku
[14:47:53] Client closed the connection.
Does anybody know the reason and a way to solve it?
Thank you,

Can you connect with SmartFTP client?

No, this log is generated by SnartFTP Client...

Can you send the IP address of the server to support at smartftp.com?

Yes but I suppose you would need user and password too... Isn't it?
In such a case may I send it to you in a private message?
Thank you

Correct. I have contacted you by email.