Want to solve: Warning: Creating a pane with no CDocument

Hello, I have doc-view program (SDI-type). My frame window class creates
a CSplitterWnd with two panes. I'm getting the message in the subject
when creating the pane views: Warning: Creating a pane with no
CDocument. What have I done wrong? I've cut down the implementation of
my frame window to:
FrameWindow.h:
#pragma once

#include "stdafx.h"

class FrameWindow : public CFrameWnd
{
public:
    FrameWindow();

protected:
    virtual BOOL LoadFrame(UINT, DWORD, CWnd *, CCreateContext *);

    virtual BOOL OnCreateClient(LPCREATESTRUCT, CCreateContext *);

    DECLARE_DYNCREATE(FrameWindow)

private:
    /* The docs say: A CSplitterWnd object is usually embedded in a
       parent CFrameWnd or CMDIChildWnd object. */
    CSplitterWnd splitter_;
};

FrameWindow.cpp:
#include "FrameWindow.h"
#include "WindowView.h"

IMPLEMENT_DYNCREATE(FrameWindow, CFrameWnd)

FrameWindow::FrameWindow()
{
    VERIFY(Create(NULL, _T("Show Styles"), WS_OVERLAPPEDWINDOW,
CRect(10, 10, 1024, 768)));
}

BOOL
FrameWindow::LoadFrame(UINT nIDResource, DWORD dwDefaultStyle, CWnd
*pParentWnd, CCreateContext *pContext)
{
    /* If we execute CFrameWnd::LoadFrame() the program becomes very
unhappy... */
    return TRUE;
}

BOOL
FrameWindow::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext *pContext)
{
    const int rows = 1;
    const int columns = 2;

    /* A CSplitterWnd should be created in OnCreateClient() according
to the docs. */
    VERIFY(splitter_.CreateStatic(this, rows, columns));

    CRect rect;

    GetClientRect(rect);

    /* row = 0, column = 0 */
    VERIFY(splitter_.CreateView(0, 0, RUNTIME_CLASS(WindowView),
CSize(rect.right - 400, 0), pContext));
    /* row = 0, column = 1 */
    VERIFY(splitter_.CreateView(0, 1, RUNTIME_CLASS(WindowView),
CSize(rect.right - (rect.right - 400), 0), pContext));

    return TRUE;
}

As you can see I'm using the same view for each pane right now, that
will change when I get this problem sorted. WindowView is very simple,
nothing added at all at the moment. This practically my first docview
program so I guess it's something simple. Hope I posted enough
information. Running MSVC++ 8.0 SP1 on fully patched WinXP Pro.

- Eric