[EDIT] I downloaded latest code and demos works perfectly, so you can disregard this.
I downloaded bepuphysics 2 v2.0.0-beta zip from the github releases page, and when I try to build I get 2 errors from DemoRenderer and Demos projects.
Windows 10.
Visual Studio 2017.
Build error messages:
Error MSB3073 The command "dotnet "E:\Users\NAME\Documents\Visual Studio 2017\Projects\bepuphysics\bepuphysics2-2.0.0-beta\DemoRenderer\..\DemoContentBuilder\bin\x64\Debug\netcoreapp2.0\DemoContentBuilder.dll" "E:\Users\NAME\Documents\Visual Studio 2017\Projects\bepuphysics\bepuphysics2-2.0.0-beta\DemoRenderer\DemoRenderer.content" -debug" exited with code 1. DemoRenderer E:\Users\NAME\Documents\Visual Studio 2017\Projects\bepuphysics\bepuphysics2-2.0.0-beta\DemoRenderer\DemoRenderer.csproj 11
Error MSB3073 The command "dotnet "E:\Users\NAME\Documents\Visual Studio 2017\Projects\bepuphysics\bepuphysics2-2.0.0-beta\Demos\..\DemoContentBuilder\bin\x64\Debug\netcoreapp2.0\DemoContentBuilder.dll" "E:\Users\NAME\Documents\Visual Studio 2017\Projects\bepuphysics\bepuphysics2-2.0.0-beta\Demos\Demos.content" -debug" exited with code 1. Demos E:\Users\NAME\Documents\Visual Studio 2017\Projects\bepuphysics\bepuphysics2-2.0.0-beta\Demos\Demos.csproj 13