Web Browser - Strange DocumentComplete behaviour

[intraman]

Hello,

I've come across a problem whilst coding my web browser control. Any help would be very much appreciated. Here's the deal:

Private Sub net_DocumentComplete(ByVal pDisp As Object, URL As Variant)
    If (pDisp = net.Application) Then
            work.Text = net.Document.documentelement.innerHTML
    End If
    Call yell
End Sub

Now, before I even navigate to a page. (On form load in fact), my web browser control (net) fires the following error:
It highlights the work.text line

Rune-time error '91':
Object variable or With block variable not set

What is the cause of this problem? Thanks a lot.
Jord