I followed the instruction on https://dotnet.github.io/getting-started/ I installed .NET Core on Windows 8.1 and executed in an empty folder:
dotnet new
dotnet restore
dotnet run
The packages were downloaded, the application compiled, but the execution finished with the Exception.
Unhandled Exception: System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.
What could be the problem?
I tried to reproduce on my Windows 8.1 and it works.
Which version of dotnet cli are you using (run dotnet --version)? The latest installer can be found here
You can also try to run in with verbose output enabled: dotnet --verbose run
My (working) output is below. Can you see any difference?