Failed to make the following project runnable (Object reference not set to an instance of an object.)

Question

When I create default web project in Visual Studio 2015 (Update 3) with installed .NET Core 1.0 SDK and Tooling (preview 2) and restart the Visual Studio after reverting loc

Answer 1

In my case the problem was that one of the class library projects in a solution was referencing an AspNetCore.Identity library by the absolute path when I pulled sources from the source control. Because of that - wrong paths were generated in project.fragment.lock.json file and solution couldn not build. Fixing that absolute path reference in .csproj file made it work.