Open Existing PowerPoint via VBA

Question

In order to open an existing pptx file and add a new slide to the deck using VBA, I'm referring to an earlier post. The below link is to the post, but, when I try to execute the sub I obtain a "Object Needed" run-time problem after selecting the pptx. I've also provided the code that I tried executing, based on the relevant thread. Any idea how to resolve this error?

Reference Link

Sub Test()
With Application.FileDialog(msoFileDialogFilePicker)
       .AllowMultiSelect = False  'only allows the user to select one file
        ' Set the title of the dialog box.
      .Title = "Select the File."  'Put any text to help the user choose the correct file
        'clear filters then add pptx filter
      .Filters.Clear
      .Filters.Add "PowerPoint files", "*.pptx"   ' This can be any file extension to filter the choices
        ' Show the dialog box. If the .Show method returns True, the
        ' user picked at least one file. If the .Show method returns
        ' False, the user clicked Cancel.
      If .Show = True Then
        fxname = .SelectedItems(1)
      End If
   End With
 Set opres = Presentations.Open(fxname, False, False, True) 'opres is the variable for the choosen file
 opres.Windows(1).Activate  'Activates that presentation.
End Sub

When debugging, the Set opres = Presentations.Open(fxname, False, False, True) is what's highlighted as an error.

Answer 1

You do not have the proper reference to open PowerPoint Presentations, open with createobject, look at Open a PowerPoint presentation from Excel with VBA and then set that presentation to a variable