Connection failed

I just updated to WINSCP 4.1.8 build 415. It responds with "Can't resolve host name, Connection failed." and does not connect to my host even though the previous version of WINSCP and all other applications connect to my host.

Here are my entries: hostname.com; port 21; user name, password and protocol ftp. My fire wall has always permitted WINSCP connection. :o

Please read FAQ. If that does not help, come back.