TurboPrint & PrintFab

I am installing on Ubuntu 6.06
I have successfully installed the free turboprint for my Canon Pixma MP500.
I bought the licence.
WHen I go to register the key file, I can't get past the prompt for the root password.
I *AM* running setup as root.

monkey@Fjord:~/Cannon/turboprint-1.94-4$ sudo ./setup ...