I have a new vanila install of windows 7 and i too do not get anything generated when i select any of the models of nas.
I have installed the Win7 rollup, .net4 and c++ vb updates to see if they made any difference, but no matter what i try, i get nothing when clicking the generate button.
I am also running it as Administrator.
I understand this is a port of the html version off the site, If so what program was it ported in? maybe there is an update or something else that i need to install?
I am running as a VM, not sure if thats anything to do with it.
if i originally click the Generate button and stay over it, it does not seem to depress until i move off the button area. after that it depresses fine, but never displays the serial.
I can use the online version, so not the end of the world.