EXEC : GenerateProjectFiles error : A valid version of Visual Studio does not appear to be installed.
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.MakeFile.Targets(46,5): error MSB3073: 命令““E:\Epic Games\4.12\Engine\Build\BatchFiles\Rebuild.bat” Start_1Editor Win64 Development “E:\Project\Start_1\Start_1.uproject” -waitmutex”已退出，代码为 -1。
Please install and use Visual Studio 2015