Please remember to set E12_ImGUI as start up project (Right click E12_ImGUI and then click Set as StartUp Project
You might need to clean and rebuild the solution (Right click Solution 'Shaders' (3 projects)then clickClean SolutionandRebuild Solution`)
Unpolished example of the application using smart pointers can be found in the shared_pointers branch (There's some minor bugs with Terrain Tessellation Example when using shared pointers).
Application description can be found here