connection was aborted by the software in your host machine

I get this everytime I'm trying to connect:

"
SmartFTP v1.5.991.31
Resolving host name "hdd.takas.lt"
Connecting to 82.135.223.194 Port: 21
Connected to hdd.takas.lt.
An established connection was aborted by the software in your host machine.
Server closed connection
Cannot login waiting to retry (30s)...
"

And only yesterday I've used smart ftp normally - without any of this shit...
What's wrong?

Thanks for your help.