I\'m running VS 2017 RC4.
I add a reference in my .NET Core app to my .NET 4.5 dll and it compiles. When a line that references the dll is called at runtime, I get:<
I had the same problem, but with .NET Standard 2.0 and a .NET Framework 4.0 assembly. The solution was create a nuget with my dll in nuget package explorer targeting .NET Standard 2.0, then add the package to the project.
Link to nuget explorer: https://github.com/NuGetPackageExplorer/NuGetPackageExplorer