I have been using NXT3 for some time. It stopped working - would not create a viable disk. Internal diagnostics indicated that the drive was OK. I ordered the upgrade to Creator NXT 3. The download included "setup" and "Content" and included a product key. "Setup" installed but did not request a key. "Content" finally installed, but will not work - no new desktop icon, etc. The installation process indicated that the previous version had been uninstalled, but it still opens (still does not work). I could use any advice that you can provide - i have spent too much time on this.