Adobe Acrobat DC stopped working when my plugin loads

Hi All,

We have a plugin for stamping, in PDF documents. The Stamp contain custom data which is taken from our system.For that purpose we make our logic as tlb and trying to refer . Then the plugin fails and acrobat stopped working. The below code show we are dealing with tlb.

char* GetStampString()

{

    char *chRet;

    try

    {      

        HRESULT hr = CoInitialize(NULL);

        MyInterOp::ITest* pTest = NULL;

        hr = CoCreateInstance(__uuidof(MyInterOp::Test), NULL, CLSCTX_INPROC_SERVER, __uuidof(MyInterOp::ITest), (void**)&pTest);

        MyInterOp::MyStruct HUGEP *pBSTR;

//The below line fails when plugin initialized.

        hr = SafeArrayAccessData(pTest->GetData, (void HUGEP* FAR*)&pBSTR);

        chRet = _com_util::ConvertBSTRToString(pBSTR[0].name);      

    }

    catch (char* str)

    {

        MessageBox(NULL, str, "Wrench", NULL);

    }

    return chRet;

}

please give a solution for this.

Thanks

Bimal George