Asus CX9400 Coolstar Drivers

I purchased the USB and audio drivers from Coolstar and installed them successfully a while back, but decided to revert to ChromeOS. Now I am back and I downloaded my drivers from Coolstar’s site but I get the error message in both that I have violated some license agreement. If I paid for the drivers, I don’t see how I could have violated any agreement, unless they are one-time use only and have to be repurchased again.