Ungroup and ReGroup all pictures and OLE objects
When moving back and forth between PC and Mac, it's a good idea to convert your graphics into native PowerPoint/Office drawing shapes rather than operating system-specific formats like WMF, PICT, etc.
This macro will ungroup and regroup each such shape in your presentation, which converts the elements to native PPT drawing shapes.
Suggestion: run this only on a COPY of your original presentation.
Sub UngroupRegroup() ' Ungroups/Groups OLE objects, pictures and groups Dim oSh As Shape Dim oSl As Slide For Each oSl In ActivePresentation.Slides For Each oSh In oSl.Shapes Debug.Print oSh.Name Select Case oSh.Type ' add other types as needed Case Is = msoEmbeddedOLEObject, msoPicture, msoGroup With oSh.Ungroup .Group End With Case Else ' do nothing End Select Next ' shape Next ' Slide End Sub