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WS-FTP unable to connect to server after software update

Mark asked
Last Modified: 2016-03-02
I have a bit of an authentication problem. I updated some packages on my Slackware64 14.1 system yesterday. Today, when a client was trying to WS-FTP to his account, he was blocked. The WS-FTP log is below. I've tried restarting openSSH. I can ssh to this account, but the client cannot WS-FTP. I'm sure it has something to do with the update, but I don't have any idea where to look. Need help
KexInitPacket (Client):  no kex guess present
00:  diffie-hellman-group-exchange-sha1
01:  diffie-hellman-group1-sha1
Failure to agree with SSH server on compatible algorithms
SSH Transport agreed algorithms
     Purpose: key agreement             Algo: invalid
     Purpose: server host key           Algo: ssh-rsa
     Purpose: encryption cs             Algo: aes128-ctr
     Purpose: encryption sc             Algo: aes128-ctr
     Purpose: MAC cs                    Algo: hmac-sha1
     Purpose: MAC sc                    Algo: hmac-sha1
     Purpose: compression cs            Algo: none
     Purpose: compression sc            Algo: none
Failed SSH Key Exchange
SSH Transport closed.

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