Am I barking up the wrong CObArray

I want an object of array of object arrays. Seems reasonable enough to
me. In my mind I have a network of nodes (m_oaNodes). I see this as a
CObArray of node objects. I want each node object to contain a
CObArray of objects containing information about nodes it connects to
(m_oaSubNodes). Here is the AddNewRecord function from the document
class:-

I am using CObArray because the chapter on Serialization in Chapman's
book 'Learn Visual C++ 6 in 21 Days' uses CObArrays. Is it a
prerequisite of serialization to use CObArrays?

[code]

CNode * CFTreeBrowserDoc::AddNewRecord()
{
    // Create a new CNode object
    CNode *pNode = new CNode();
    try
    {
        // Add the new node to the object array
        m_oaNodes.Add((CObject *)pNode);
        // Mark the document as dirty
        SetModifiedFlag();
        // Set the new position mark
        m_iCurPosition = (m_oaNodes.GetSize() - 1);
    }
    // Did we run into a memory exception?
    catch (CMemoryException* perr)
    {
        // Display a message for the user, giving them the
        // bad news
        AfxMessageBox("Out of memory", MB_ICONSTOP | MB_OK);
        // Did we create a node object?
        if (pNode)
        {
            // Delete it
            delete pNode;
            pNode = NULL;
        }
        // Delete the exception object
        perr->Delete();
    }
    return pNode;

}

[/code]

and here is the constructor and the destructor from my node class...

[code]

CNode::CNode()
{

    m_strNodDescr = "";
    m_iCurPosition = 0;

    // Create a new CSubNode object
    CSubNode *pSubNode = new CSubNode();
    try
    {
        // Add the new subnode to the object array
        m_oaSubNodes.Add((CObject *)pSubNode);
        // // Mark the document as dirty
        // SetModifiedFlag();
        // Set the new position mark
        m_iCurPosition = (m_oaSubNodes.GetSize() - 1);
    }

}

CNode::~CNode()
{

}
[/code]

And this is what Mr. Compiler says:

[quote]
Compiling...
FTreeBrowserDoc.cpp
.....
error C2512: 'CNode' : no appropriate default constructor available
.....
warning C4150: deletion of pointer to incomplete type 'CNode'; no
destr
uctor called
.....
ftreebrowserdoc.h(13) : see declaration of 'CNode'
Node.cpp

[/quote]

Thanks,

Ben Aldhouse