Products Effected:  DentalCAM 7 (usually after new installation on new PC)

Symptoms:  "Error while activating the 3D Viewer" appears when opening DentalCAM 7

Solution:  Enable .Net Framework 3.5 and 4.7 from the Windows Features Menu in Windows

1.  Navigate to Control Panel > Programs and Features

2.  Click on Turn Windows Features on or off

3.  Activate .NET Framework 3.5 and .NET Framework 4.7

4.  Click OK and Reboot PC