This coponent generates a similar error to that reported for the PrintPreview. The following is whhat I reported to Microsoft (Jamshed Damkewala):

Jamshed,

                Here is what little information I can provide:

 The code leading up to the showing of my print dialog:

             ' Bring up the print selection dialog

            DlgPrint = New Medicomp.Controls.Dialogs.PrintDlg

            With DlgPrint

                .BackColor = Me.BackColor

                .SetParent(CType(Me, Medicomp.Controls.Dialogs.IPostDlg), MedClient)

               .SetOptions(mintNarrativeItemtag, mintNarrativeOptions, myHeaderPrintMode, mintNarrativeOutput, mstrRTFBegin, mstrRTFEnd, mbolAllowEdit, mstrPath, gobjConfiguration.RTFStyles, Filename)

                If (ovcOutline.OutlineNodes.Count > 0) Then

                    arSections.Add(New Medicomp.Controls.Dialogs.CPrintSection(ovcOutline.OutlineNodes, Medicomp.Controls.Dialogs.PrintElement.OutlineView, "Outline View"))

                End If

                .SetData(strHeading, arSections, arEncounters, mstrPrintFooterLeft)

                .SetExportButtonMode(myExportButtonMode)

                .NoteFormat = myPrintNoteFormat

                If (.ShowDialog(Me) = Windows.Forms.DialogResult.OK) Then

 I can confirm that the dialog gets the Activated event before the error message. The exact error is attached.

 Our print dialog uses Infragistics  components for printing:

        Infragistics.Win.Printing.UltraPrintPreviewControl

        Infragistics.Win.Printing.UltraPrintDocument(Me.components)

        Infragistics.Win.Printing.UltraPrintPreviewThumbnail

The underlying print document is the UltraPrintDocument which is inherited from System.Drawing.Printing.PrintDocument. When our dialog is first activated, there is nothing added to the UltraPrintDocument. After the Activate event is received,  the dialog gets the following two events; no other upDocument event gets raised (i.e. no PagePrinting. PageBodyPrinting, or PagePrinted. After the EndPrint event, the error is received. I did add some additional event handlers and got the QueryPageSettings event prior to the EndPrint event.

     Private Sub upDocument_BeginPrint(ByVal sender As Object, ByVal e As System.Drawing.Printing.PrintEventArgs) Handles upDocument.BeginPrint

        upDocument.OriginAtMargins = False

    End Sub

     Private Sub upDocument_EndPrint(ByVal sender As Object, ByVal e As System.Drawing.Printing.PrintEventArgs) Handles upDocument.EndPrint

        Dim pa As System.Drawing.Printing.PrintAction = e.PrintAction

        If (Not upDocument.PrintController.IsPreview) Then

            CloseDialog()

        End If

    End Sub

 This event is received after the BeginPrint:

     Private Sub upDocument_QueryPageSettings(sender As Object, e As System.Drawing.Printing.QueryPageSettingsEventArgs) Handles upDocument.QueryPageSettings

        Debug.WriteLine("upDocument_QueryPageSettings")

    End Sub

I understand that Infragistics is also looking into this as they are getting other reports of the same error after installing the security update.

I realize this is sketchy, but that is all I have at the moment.