Porting to MFC feature pack leads crash to existing aplication

Hello all,
I started porting to MFC feature pack to my exiting application to get better UI support. I made following changes .

Modify the base class.

CWinApp to CWinAppEx

CMDIFrameWnd to CMDIFrameWndEx

CMDIChildWnd to CMDIChildWndEx

Added following line of code in InitInstance

InitContextMenuManager();
InitShellManager();
InitKeyboardManager();
InitTooltipManager();
CMFCToolTipInfo ttParams;
ttParams.m_bVislManagerTheme = TRUE;
theApp.GetTooltipManager()->
SetTooltipParams(AFX_TOOLTIP_TYPE_ALL,
RUNTIME_CLASS(CMFCToolTipCtrl), &ttParams);

code build successfully, but while launching the application i am getting crash just after login dialog apperes. while debugging i found OnInitDialog works fine. But after the oninitdialog returns , it gave exception .i dont know where exactly the crash happens .

LoginDlg oDlg(strUserName, bstrLanguage,bstrDomainName);
	
if(oDlg.DoModal() == IDOK)
{.....}

//OnInitDialog Code 
BOOL LoginDlg::OnInitDialog() 
{
CDialog::OnInitDialog();

CoTranslateWindow(GetSafeHwnd()); 

.........

return true ;
}

i am getting exception like

Unhandled exception at 0x7787703d in MyApp.exe: 0xC0000005: Access violation writing location 0x0000000000030ff8.


Problem Event Name:	APPCRASH
  Application Name:	MyApp.exe
  Application Version:	5.23.0.0
  Application Timestamp:	506d7f93
  Fault Module Name:	mfc90u.dll
  Fault Module Version:	9.0.30729.4967
  Fault Module Timestamp:	4b6bc34c

I know it is very abstract, but please help me .

Regards
BitsMax

Tags: C++, Visual Studio (Visual Studio 2008), MFC