Can't select Nrage 2.3c plugin

[Aegis Runestone]

I cannot seem to select the Nrage plugin as shown below. I have version 2.3c in my input directory, and it just doesn't appear. I just had a fresh install of windows and my old install could pick this up.

I compared the two different installs of Project64 and the file setup/locations is/are exactly the same.

Is this a directx problem?

Edit: I really need that XInput option.