Problem adding new camera using VirtualCamera_installer.exe

I followed the instructions and was able to build everything in the solution using the Release | x64 Target. I did upgrade the projects to use 2022 c++ runtime and the 10.0.22621.0 SDK. VirtualCamera_MSI_x64 installed without any errors and I'm running C:\Program Files\Contoso\VirtualCamera_MSI\VirtualCamera_Installer.exe from an elevated command prompt. I'm selecting (1)register -> (1)Vcam-SimpleMediaSource -> (2)Session -> (1) Current User. I get the following output

Register virtual camera...
 device string: {7B89B92E-FE71-42D0-8A41-E137D06EA184}
 friendly name: SWVCamMediaSource
 Lifetime: 0
 Access: 0
 Succeeded (00000184461CBE00)!
 (null)(0):(null), hr=0x80073D57, msg=
 (null)(0):(null), hr=0x80073D57, msg=
 not running in app package
 Start camera
 Succeeded!

The 2 (null) lines and not running in app package are printing in yellow. Even though it claims things succeeded no new camera is being created - I've checked the following places

• Device manger / Imaging Devices
• Camera App
• remove, TestVCam and TestCustomControl all print No Virtual camera found

Reproduce with VirtualCamera_Installer.exe from an elevated command prompt using the reported registration path and options. Check the installer output and the Device Manager, Camera App, TestVCam, and TestCustomControl results. Done means registering Vcam-SimpleMediaSource creates a camera that is visible and detected by those checks.