Hi All.
Regarding the last update, I wasn't able to connect from my office, as it happened earlier.
Did you change the ports used by the server and client to comunicate? I'm aware that some of them are firewalled here.
Thanks.

No, nothing has changed. You must allow traffic on TCP port 1321.

Thank you Aminiel.

So, what may causes this error?
"Error:
Connection lost before reading first message
OK "

Could you please help me to discover how to fix it?
Gabriel.