Install failure

I'm attempting to install SolarWinds-Patch-Manager-v2020.2.4.377, and I get to enter my email address and the install fails with the following message.

System.ArgumentNullException: Value cannot be null.
Parameter name: source
at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)
at OrionInstallerLib.LicenseDetector.get_HasLicensedSolarWindsProduct() in C:\buildAgent\work\43ebf6f390c42024\Src\OrionInstallerLib\LicenseDetector.cs:line 54
at OrionInstallerLib.LicenseDetector.GetOrSetOipHadLicenseAtSetup() in C:\buildAgent\work\43ebf6f390c42024\Src\OrionInstallerLib\LicenseDetector.cs:line 43
at OrionInstaller.Program.Main(String[] args)

I'm at a loss. I've rebooted, I've checked windows updates, I've verified all the pre-flight checklist from the install guide. 

There is no c:\buildAgent folder on the computer.

Any help?