SmartsheetBuilder.Build() fails - "Invalid Class"

[dapug]

SmartsheetBuilder.Build() throws a System.Management.Management.ManagementException "Invalid Class" at runtime.

Steps:

• Fire up a new project (console, etc)
• Add NuGet package for smartsheet-csharp-sdk (2.93.1)
• Run the following:

         var accessToken = "YOUR_TOKEN";
            var foo = new SmartsheetBuilder()
                .SetAccessToken(accessToken)
                .Build(); 

The error is thrown in Utils.cs GetOSFriendlyName() line 55. I have no idea why it is doing this. It was working fine, and then suddenly no longer. I wonder if a Windows 10 update changed some system thing this is trying to call? That is the only thing that happened on my system between the time my project was working, and not.

OS: Windows 10 x64, v1903 (Build 18362,836)
VS: v16.5.0 Preview 1.0
Project Target Type: .Net Framework 4.7.2