I have an SDI document that runs fine in Debug Mode but crashes in Release Mode.  I have set up my project so I can debug in Release Mode. The project has a tab view

Here is what is happening

OnInitDialog calls this
// parent is Tab Control, grandparent is Tab Vie
m_pTabViewWnd = (CTabVw *)GetGrandParent()

//this is the function
CWnd* CSmsPropPage::GetGrandParent(

  CWnd *parent= GetParent();      // tab control is the paren
  return parent->GetParent();       // tab view is the grandparen

In the GetGrandParent() function the pointers are not valid in Release Mode.  In fact the call to this function takes me into a function called CWnd* PASCAL CWnd::FromHandle(HWND hWnd), then returns. It doesnt step into GetGrandParent() in Release Mode

I dont know why. Can someone help me out?

Jerry