Ultranav Utility won't install?

[jjfcpa]

I did a clean install of Windows Vista Ultimate and so far everything seems to be working ok except for the Ultranav Utility. It was installed by System Update, but when I try to configure the ultranav it says it's not installed. I've tried completely uninstalling and rebooting, then reinstall, but still won't let me access it.

Any ideas?