Errors on Unity 2018.3.0f2 (64 bit)

[alastaira]

Having wrestled with goodness-knows-how-many different variations of "OpenCV in Unity", I was pleased to stumble across this repository earlier today, but seemed to have fallen at the first hurdle! Opening the project in Unity 2018.3.0f2 gives the following errors: (with the Project set to ".NET 4.x scripting runtime and API compatibility"):

Assembly 'Assets/UniCV/Plugins/x64/OpenCvSharp.Extensions.dll' will not be loaded due to errors: Reference has errors 'PresentationCore'. Assembly 'Assets/UniCV/Plugins/x64/OpenCvSharp.UserInterface.dll' will not be loaded due to errors: Reference has errors 'OpenCvSharp.Extensions'. Assembly 'Assets/UniCV/Plugins/x64/PresentationCore.dll' will not be loaded due to errors: Unable to resolve reference 'Microsoft.VisualC'. Is the assembly missing or incompatible with the current platform? Unable to resolve reference 'System.Deployment'. Is the assembly missing or incompatible with the current platform? Unable to resolve reference 'PresentationCFFRasterizer'. Is the assembly missing or incompatible with the current platform?

I tried to set .NET 3.5 (deprecated) instead, which removed the complaint about Microsoft.VisualC, but the other errors remained, and the project still fails to compile. Any ideas?