Some users may run into trouble with the latest update, seeing numerous errors with the following message:
Unable to register the DLL/OCX: RegSvr32 failed with exit code 0x3.
This is especially prevalent on Windows 7. The solution is to install Windows Updates. Go into the Windows Control Panel under Windows Updates, and make sure all of your Important updates are installed.
After installing your Windows Updates, try re-running the installer. If you are unable to run the installation from the Command Center, you should be able to find the latest SONAR Update installer in C:\ProgramData\Cakewalk\Command Center\Downloads, or you can download it directly from your Cakewalk account.
You can also try re-installing the Microsoft Visual Studio 2015 update individually from Microsoft here: https://www.microsoft.com/en-us/download/details.aspx?id=48145