No actually im getting the same output even before i downloaded ruby.
i downloaded metasploit the first time without ruby installed and got the same results. everytime i tried to open metasploit web it was just a quick dos box and dissappears and metasploit gui dont even open.
So i tried downloading ruby, and the samething happens.
it shows a quick dos box and disappears.
Have you downloaded netcat and just clicked on the program and it just showed a quick dos box then closed unless you put it in a particular directory?
Thats exactly what metasploit 3.1 is doing to me. just showing the dos box whenever i click on the metasploit web.