Visual Studio.Net 2003 and Auto Cad Map 2004

[Anonymous]

Hi All,
I am creating the instance of AutoCad Map through Vb.net 2003. When I am close the Auto Cad through code, I am getting the error Virtual call.

I am sending the code to close AutoCad

If Not AcadDoc Is Nothing Then
AcadDoc.Close(False)
AcadApp.Quit()
AcadDoc = Nothing
MapApp = Nothing
AcadApp = Nothing
End If