Ok - for giggles; I downloaded the complete zip file, stuck the server components into a new directory, copied over the configs, everything ran fine on the server side.
On the client side, I used the binary MultiverseClient.exe and pointed it at my login server/master server (all server stuff is on the same box)
I still get the issue of no default instance.
If anyone has clues to this, please feel free to pipe up
Also - I am not adverse to giving access to the server - its just an AWS instance, and has not got the secrets of the universe on it