Server closed connection

For years I didn't have a problem. Now I've updated and I think this log shows the problem...

[19:01:26] SmartFTP v2.5.1008.27
[19:01:27] Resolving host name "192.168.1.64"
[19:01:27] Connecting to 192.168.1.64 Port: 21
[19:01:27] Connected to 192.168.1.64.
[19:01:47] An established connection was aborted by the software in your host machine.
[19:01:47] Cannot login waiting to retry (30s)...
[19:01:47] Server closed connection
[19:02:17] Continue to login attempt 2...
[19:02:17] Resolving host name "192.168.1.64"
[19:02:17] Connecting to 192.168.1.64 Port: 21
[19:02:17] Connected to 192.168.1.64.
[19:02:38] An established connection was aborted by the software in your host machine.
[19:02:38] Cannot login waiting to retry (30s)...
[19:02:38] Server closed connection
[19:03:08] Continue to login attempt 3...

Many thanks,
Jim Duppenthaler

There is no FTP server running at this IP:

C:\Users\mb>ftp 192.168.1.64
> ftp: connect :Connection timed out
ftp>

Please contact your web hosting provider for the correct host/ip address.

Regards,
Mat

Thanks for the reply. Now I know where to start looking.