Neverwinter nights private lan fix

[tricrown]

I have 1 store bought $55 authentic NWN 3 CD game which comes with 1 CD code. I’ve used it to install the game on my computer and the kid’s computer. If I try and play a LAN game, with or without the private LAN fix installed, it gives a message on the computer trying to join that the CD key (that is used during installation of the game on both machines) is already in use.

I’m under the impression that that is what the fix is suppose to fix. Or do I have to do something else also?