Toolbar Asset w/VC++ 5.0 in win95 but not winNT

After upgrading to VC++ 5.0, any app that has a toolbar gets a asset as soon as the mouse is moved over the toolbar.  Note: this happens on some win95 machines but not on winNT.

The debug version of the app asserts in tooltip.cpp at line
383 when the mouse is over the toolbar.  

from tooltips.cpp

void CWnd::FilterToolTipMessage(MSG* pMsg)
{
...snip...

                // add a "dead-area" tool for areas between toolbar buttons
                TOOLINFO ti; memset(&ti, 0, sizeof(TOOLINFO));
                ti.cbSize = sizeof(TOOLINFO);
                ti.uFlags = TTF_IDISHWND;
                ti.hwnd = m_hWnd;
                ti.uId = (UINT)m_hWnd;
                if (!pToolTip->SendMessage(TTM_GETTOOLINFO, 0, (LPARAM)&ti))
                {
                        ASSERT(ti.cbSize == sizeof(TOOLINFO));
                        ASSERT(ti.uFlags == TTF_IDISHWND);
                        ASSERT(ti.hwnd == m_hWnd);
                        ASSERT(ti.uId == (UINT)m_hWnd);
line 383 --->      VERIFY(pToolTip->SendMessage(TTM_ADDTOOL, 0,
(LPARAM)&ti));
                }


...snip...
}