Unhandled execption in ariel.exe(APIOCX):0xC0000005 :Access violation

[With_problem]

Whenever i debug the program i got this error when it comes to dll function..i am able to load dll lib and able to link.....can anybody help me to point out the problem where i m amking big mistake....thanks for your time and support.... Dll function: short setQuoteToDB( BSTR* strDateTimeStamp, short* intMarketNo, BSTR* strMarketName, BSTR* strBid, BSTR* strAsk, short* intMarketState);

typedef int (CALLBACK* Set_Quote_DB)(unsigned short**,
short*,
unsigned short**,
unsigned short**,
unsigned short**,
short*);

void CArielProjectVer2Dlg::OnPriceChangeArielapictrl1(LPCTSTR SessionId,
LPCTSTR RequestId,
short MarketNo,
LPCTSTR Market,
LPCTSTR Bid,
short BidDirection,
LPCTSTR Ask,
short AskDirection,
LPCTSTR High,
LPCTSTR Low,
short MarketState,
LPCTSTR Timestamp)
{
// TODO: Add your control notification handler code here

SessID=SessionId;
CurrentRequestId=RequestId;

marketno.Format("%d",MarketNo);
bid\_d.Format("%c",BidDirection);
ask\_d.Format("%c",AskDirection);
marketstate.Format("%d",MarketState);

    m\_MainEdit= SessionId + RequestId + marketno ; 
m\_MainEdit= Market +  Bid + bid\_d + Ask + ask\_d + High ;
m\_MainEdit=m\_MainEdit + Low + marketstate + Timestamp ; 

UpdateData(FALSE);
iLineCount=m\_EditCtrl.GetLineCount();
m\_EditCtrl.LineScroll(iLineCount);

HINSTANCE hInstance = AfxLoadLibrary("C:\\ActiveXdll\\WartzODLCOM.dll");
if(hInstance != 0)
{

MessageBox("load dll");
    //Unhandled execption in ariel.exe(APIOCX):0xC0000005 :Access violation 

USES\_CONVERSION;
BSTR bsTimeStamp = A2BSTR(Timestamp);
BSTR bsMarket    =  A2BSTR(Market);
BSTR bsBid       = A2BSTR(Bid);
BSTR bsAsk       = A2BSTR(Ask);
    Set\_Quote\_DB SetQuote;
SetQuote = (Set\_Quote\_DB)GetProcAddress(hInstance,"setQuoteToDb");
if(SetQuote != NULL)
{

     SetQuote(&bsTimeStamp,&MarketNo,&bsMarket,&bsAsk,&bsBid,&MarketState);
      return;
}	

	SysFreeString(bsTimeStamp);
SysFreeString(bsMarket);
SysFreeString(bsBid);
SysFreeString(bsAsk);

FreeLibrary( hInstance );

return;
}