Network connectivity problem
In some cases it may be that you cannot reach your Radarcape by entering just your hostname but only with the IP address. This is a routing problem of your Windows computer. I also had such a problem, the solution is described this forum entry.
Solution is that you either add a ".local" behind your Radarcape hostname, e.g. "radarcape.local", or you force the DNS lookups of Windows for single label domains by putting a single entry reading "." in the "Append these DNS suffixes (in order)" in the "Advanced TCP/IP settings" dialog of the network settings for TCP.