The installer I downloaded from internode keeps returning this variable once it starts to install the files in whatever selected directory:
"Access is denied."
I found this error relates to their installer, you have to access cmd mode in vista (not sure if it's only 64bit or 32bit as well) run as administrator and install from cmd prompt than using any interface. It's a pain, obviously they haven't codded it to work properly with MS yet. You can find better instructions on the beta website, first sticky, second page.