I have installed the latest version of JetBrains Rider 1 EAP and open .NetCore project with project.json that created by VS2015 , I have loading successfully , but when created new .NetCore web project or add new .NetCore class library with .csproj in old project with project.json that library loading failed
Project 'ClassLibrary' load failed: Cannot load the project with the current MSBuild toolset.
Please ensure MSBuild 15.0 is installed.
I have also installed the .NetCore SDK and runtime from microsoft