Exception error when attempting to connect via SFTP

I'm trying to login to a site via SFTP and I appear to have my entered my credentials correctly, but I keep getting the following error:

[15:15:37] SmartFTP v4.0.1209.0
[15:15:37] Resolving host name "216.17.74.142"
[15:15:37] Connecting to 216.17.74.142 Port: 22
[15:15:37] SSH-2.0-OpenSSH_5.5
[15:15:37] Starting SSH session. Remote Id: "SSH-2.0-OpenSSH_5.5"
[15:15:37] SSH protocol version reply. Client Id: SSH-2.0-SmartFTP
[15:15:37] Key Exchange Algorithm: diffie-hellman-group-exchange-sha256
[15:15:38] Exception. Error=0x80090019
[15:16:38] Timeout (60s).
[15:16:38] Client closed the connection.
[15:16:38] Connect failed. Error=0x8004440b'

This is on a Windows 2003 Server machine. Thanks!

-Ryan

Do you have this hotfix installed?
http://support.microsoft.com/kb/948963

Will ask my server admin and get back to you. Thanks!