PowerPoint: Images not found after joining multiple PPTX to one

Question

We are using a code block which worked fine in PowerPoint 2007 and 2010:
public static PPT.Presentation AddPresentation(PPT.Application appl, bool withWindow)
PPT.Presentation presentation = appl.Presentations.Add(ConversionUtils.BoolToTriState(withWindow));
return presentation;
public static void AppendSlidesFromFile(PPT.Presentation presentation, String fileName, int slideStart, int slideEnd)
if (presentation == null) return;
try
int index = presentation.Slides.Count;
int i = presentation.Slides.InsertFromFile(fileName.Replace("/", "\\"), index, slideStart, slideEnd);
if (i == 1)
index = presentation.Slides.Count;
PPT.Slide slide = presentation.Slides[index];
catch (Exception e)
In PowerPoint 2013 (highest patch level, verified on 2013 Professional and 2013 Professional Plus) this still joins our PPTX into one, however, all the images embedded in the single PPTX files are merely shown as frames or image objects, saying that the
image cannot be found.
No exceptions are being thrown in the process.
Is there any fix or workaround available for this?
Regards,
Michael

Answer 1

Hi,
I have used the above code you provided to merge ppts into one, but I can't reproduce the issue. In my ppt, images of different format, png, jpg, bmp,gif, all could  work. My PowerPoint is Office 2013 Professional Plus 2013. What's the format of
the image you have inserted into your ppt ?Have you update your PowerPoint? will it happen when you insert an image manually in your PowerPoint 2013 ?
Best Regards
Lan
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