Access violation while initializing matlab-compiler dll / lib in c++ only during debugging

what I'm trying to do is integrate a MATLAB-Compiler dll/lib to an new c++ project.

I followed this instruction: How do I integrate my C++ shared Library generated from MATLAB which seams working good (no build errors and intelisense is working good, so it seams all required information are there).

I'm using a very simple mathlab code / function for testing:

function output = extest( arg1,arg2 )
    output = arg1+arg2;
end

And the "default" c++ code for matlab functions:

#include "extest.h"
#include <cstdlib>
#include <stdio.h>

int main(int argc, char** argv){

    mclmcrInitialize();
    if (!mclInitializeApplication(NULL,0)){

        std::cerr << "could not initialize the application properly" << std::endl;
        return -1;
    }
        if(!extestInitialize()){
            std::cerr << "could not initialize the library properly" << std::endl;
            return -1;
        }
        else{
            try{

                //code itself (not jet reached therefore removed)

            }catch(const mwException& e){
              std::cerr << e.what() << std::endl;
              return -2;
            }
            catch(...){
              std::cerr << "Unexpected error thrown" << std::endl;
              return -3;  
            }
            extestTerminate();
        }
        mclTerminateApplication();
        return 0;
}

After e few moments after the debugger tries to run the line if(!extestInitialize()) the following error gets thrown.

Exception thrown at 0x000002BF72E0EE55 in DllTestingCpp.exe: 0xC0000005: Access violation reading location 0x0000000000000008.

I can hit visual studios continue > button and it is continued after lets say 20x click on it. Starting the code by ctrl + F5 (without debugging) everything is working good.

Any ideas why this happens in debug mode? Or better how I can get rid of this error?

PS: extest is my lib name and using Matlab R2017a 64bit and Visual Studio 2017 (debugging with x64),

The same problem (Matlab2017 + VS 2015) for me. Probably there is some conflict with java used by MATLAB.

I've fixed it by

const char *args[] = {"-nojvm"};
const int count = sizeof(args) / sizeof(args[0]);
mclInitializeApplication(args, count))

instead of

mclInitializeApplication(NULL,0)