@viklo2 That’s because you already tried to build it with VS 2015, which likely changed the build tools the project uses to v140 (VS 2015 build tools), you should select the project, go into properties (the button with a wrench on it), then go to Configuration Properties>General and change Platform Toolset from Visual Studio 2015 (v140) to Visual Studio 2013 (v120).

• This reply was modified 9 years, 3 months ago by averysumner.