User ( posted:

This is just a guess, so I hope anyone who knows the exact problem will

From the description, it sounds like your Ping test is using the IP
address to find the host, and the error returned indicates that Robot is
trying to use the Hostname (Computer name) for playback, but cannot
identify the IP address for this host. Make sure the NT box has its
Computer Name (Control Panel->Network dialog) set (correctly). The
Hostname and IP Address need to be registered with your NT domain server
(that is, if you are using domains).