I only use Windows 7, but today I have access to a relative's Windows 10 machine and am posting from that.
You may need to re-select a default printer within the Windows 10 Control Panel. This machine did originally come with Win8, but did not have T-Brac2006 on it until after Win10 was installed. The Win10 upgrade may have done something with the recognition of a default printer, something I know that CDE's products check on launch.
I was able to download, install, and launch T-Brac2006 onto this machine. While I did not go through the registration process for this install, the launch was fully successful. As I don't have tournament files, I can't test anything regarding program function, but I can launch without any error message.
The version downloaded was 3.57.02. Your submission did not mention a version number.
Always check, download, and install the most recent update of your software to ensure that issues may have been corrected.