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Save PPTX to PPTX with animation

When I am saving a pptx with animation to pptx, the generated file can’t be opened.
I have attached the file before and after.

Please advise,

Hi Oren,

Thanks for your interest in Aspose.Slides.

I have worked with the presentation file shared by you using Aspose.Slides for .NET 15.6.0 by employing following sample code. The presentation file generated is getting opened on my end without any issue. Can you please try using the specified version on your end to verify the things. For your kind reference, I have attached the generated presentation as well that is getting opened in PowerPoint 2010 without any issue.

Presentation pres = new Presentation(path + “trial-4.pptx”);
pres.Save(path + “trial-4New.pptx”, SaveFormat.Pptx);

Many Thanks,