Hadoop doesn't like it if there are underscores in the hostname of the machine. Edit /etc/hostname and /etc/hosts and change both instances of Marc_Red_data to MarcRedData, then reboot.
I've been banging my head against the same problem, and when I found your post, I noticed that your hostname like mine had underscores. I changed the hostname of the machine and now it works fine. I suspect hadoop is using some library that tries to resolve the hostname as it would a URL, and URLs can't have underscores, so it just errors out.
[Edit] I didn't notice before that you said you're running Windows, so the process for changing your hostname will differ. http://www.howtogeek.com/howto/windows-vista/change-your-computer-name-in-windows-vista/