Specified cast is not valid?

[rejectpenguin]

Hey, im trying to run this code and keep running into "Specified cast is not valid" for the line with Temp.document. etc.

It is allowing me to access all of IE's properties except for parentWindow. Im not sure what to do here. Does anyone have any ideas?

Public Class Form1
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        BackgroundWorker1.RunWorkerAsync()
    End Sub
 
    Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
        Dim Temp As Object
        Temp = CreateObject("InternetExplorer.Application")
        Temp.Visible = True
        Temp.Navigate("http://www.google.com")
        Do Until Temp.ReadyState = 4
        Loop
        'MsgBox(Temp.document.body.innerHtml) 'this works but parentwindow doesnt
        Temp.document.parentWindow.execScript("alert('test')")
    End Sub
End Class