Unreal Engine 4.3 Update Preview

So, I thought I’d give the improved Android compatibility a try, but whenever I try to package or launch for Android specifically, I get the error: LogPlayLevel: Display: UnrealBuildTool: C:\Program Files\Unreal Engine\4.3\Engine\Source\Runtime\InputCore\Classes\InputCoreTypes.h(5,9) : fatal error: ‘InputCoreTypes.generated.h’ file not found

Is a problem with the preview build? Or did I make a mistake when converting my project?