Windows Unity Native Plugin C++/CLR Crash (VMWare)

I am attempting to make a unity plugin for rendering to opengl natively.

I have been able to get a mac version working but bridging c++ to Objective c is simple. I am now attempting to bridge a c++ dll to my C# code and am having little to no luck.

I am able to use every exported method except the rendering methods.

The Header

 extern "C" void __declspec(dllexport) UnitySetGraphicsDevice (void* device, int deviceType, int eventType);
 extern "C" void __declspec(dllexport) UnityRenderEvent (int eventID);

And Code File

 void UnitySetGraphicsDevice (void* device, int deviceType, int eventType){
 }
 
 void UnityRenderEvent (int eventID){
 }

Both of these methods cause unity to crash

However if I omit these two methods, everything else seems to run without a hitch. Since i really need these methods to be functioning, I would like to know what I am doing wrong.

here is an example of a dll export that is working

Header

 void __declspec(dllexport) SetImageParams(void* textureID, int width, int height, const char * pluginsPath, const char * videoURL);

Code

 void SetImageParams(void *textureID, int width, int height, const char * pluginsPath, const char * videoURL){

 }

I am running this in VMWare Fusion on Windows 7