Hi Wayne,
In the Roxio website under system requirements it shows that Roxio Creator NXT Pro in compatible with windows8. Check this out.
http://www.roxio.com/enu/products/creator/pro/system-requirements.html
Microsoft compatible center says it is compatible. The compatibility of this software is based on votes. It worked for few people and rest tried to install it in compatibility mode.
So you can uninstall the application and then install it in compatibility mode and check.
Follow these steps to uninstall the application.
a. Press Windows key + X and select Control panel.
b. Select Uninstall a program
c. Select Roxio Creator NXT Pro from the list and select Uninstall.
Now follow the steps to install in Compatibility mode:
a. Right click on the driver installation file and select Properties then tap or click on the Compatibility tab.
b. Place a check in the Run this program in compatibility mode box.
c. Tap or click the drop down box and select a previous Operating System, then tap or click OK.
Reference:
Make older programs compatible with this version of Windows
http://windows.microsoft.com/en-US/windows-8/older-programs-compatible-version-windows
but the issue persists, then I would suggest you to contact Roxio support team for further assistance regarding the product. Here is the link for your reference.
http://www.roxio.com/enu/support/default.html
Feel free to contact us for ant Windows related queries.