write Database error..

[shizu]

Hi..
I'm using VC6++ with window xp..
and my coding is like below..

try
{
	CString szConn;

	hrResult = m_Connection.CreateInstance(__uuidof(Connection));

	if(SUCCEEDED(hrResult))
	{
		szConn = "Provider=Microsoft.JET.OLEDB.4.0;Data 
                                                source=C:\\PSMotion\\Database\\IO.mdb";

		_bstr_t bstrConn(szConn);
		hrResult = m_Connection->Open(bstrConn,"Admin","",-1);

		if(SUCCEEDED(hrResult))
		{
			_CommandPtr	pCommandResult;
			_variant_t  vtEmpty1(DISP_E_PARAMNOTFOUND, 
                                                                               VT_ERROR);
			_variant_t  vtEmpty2(DISP_E_PARAMNOTFOUND, 
                                                                               VT_ERROR);

			sprintf(sql,"DELETE * FROM IOList");
			_bstr_t bstrResult(sql);
			pCommandResult.CreateInstance(__uuidof(Command));
			pCommandResult->ActiveConnection = 
                                                                                   m_Connection.GetInterfacePtr();
			pCommandResult->CommandText	= bstrResult;
			pCommandResult->Execute(&vtEmpty1, &vtEmpty2, 
                                                                                   adCmdText);

			for(int i=0; i<m_poProperty->m_iTotalSignal; i++)
			{
				sprintf(sql,"INSERT INTO IOList (SignalName, 
                                                                          Pattern, Port, Type, Address, Mapping) 
                                                                          VALUES('%s','%s',%d,%d,'%s','%s')", 
                                                                          m_poProperty->m_szMapping
                                                                          [i].szSignalName, m_poProperty-
                                                                          >m_szMapping[i].szPattern, 
                                                                          m_poProperty->m_szMapping[i].iPort, 
                                                                          m_poProperty->m_szMapping[i].bType, 
                                                                          m_poProperty->m_szMapping
                                                                          [i].szAddress, m_poProperty-
                                                                          >m_szMapping[i].szName);

				_bstr_t bstrResult(sql);
				pCommandResult.CreateInstance(__uuidof
                                                                                                                 (Command));
				pCommandResult->ActiveConnection	= 
                                                                                      m_Connection.GetInterfacePtr();
				pCommandResult->CommandText= bstrResult;
				pCommandResult->Execute
                                                                (&vtEmpty1, &vtEmpty2, adCmdText);
			}

			pCommandResult.Release();
		}
	}

	if(m_Connection)
	{
		m_Connection->Close();
		m_Connection.Release();
	}
}
// ** Error Checking
catch(...)
{
	if(m_Connection)
	{
		m_Connection->Close();
		m_Connection.Release();
	}

	CWnd oWnd;
	oWnd.MessageBox("Open Database Error", "Database", MB_OK | 
                                              MB_ICONSTOP);
}

when coding comes to pCommandResult->Execute(&vtEmpty1, &vtEmpty2, adCmdText);, will jump to catch.., i don't know what happen on it..but only my PC will not happen this error. If i run this program in other PC, same error will prompt out..

pls advise..
regards,
shizu