Steps to reproduce:
1. Open the attached project
2. Open the scene1.unity scene
3. Switch platform to Windows Store
4. Build for Hololens
5. Open VS solution
6. Deploy on Hololens/Emulator/PC as x86
7. Observe debugger message: "Run-Time Check Failure #0 - The value of ESP was not properly saved across a function call. This is usually a result of calling a function declared with one calling convention with a function pointer declared with a different calling convention.

Reproduced with: 2017.1.3p3, 2017.2.2p4, 2017.4.2f1, 2018.1.0f1, 2018.2.0b2

Why won't fix: this is an issue in the plugin in question - it is using __cdecl calling convention to define the function while Unity expects __stdcall:

#if PLATFORM_WINRT
#define AUDIO_CALLING_CONVENTION __stdcall
#else
#define AUDIO_CALLING_CONVENTION
#endif

// This function fills in N pointers for the N effects contained in the library and returns N.
extern "C" UNITY_AUDIODSP_EXPORT_API int AUDIO_CALLING_CONVENTION UnityGetAudioEffectDefinitions(UnityAudioEffectDefinition* descptr);