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Cloning a slide with chart- creates a blank slide in the saved pptx (with corruption error)

I am testing slides (v5.6) to simply clone/copy an existing slide to the end of the presentation.

When the source slide is simple (i.e. blank) no issues.

When the source slide has a chart, I am able to manipulate the chart data and get the desired results, but can not copy/clone the slide with chart. I get an error when I try to open the saved pptx (corrupt file).

Attached is the simple test aspx page with source/template ppt1.pptx and resulting ppt1done.pptx files

Hi Cuneyt,

I have tried opening the generated presentation shared by you and it does show the repair presentation message. However, when I have used your presentation for cloning on my end the generated presentation does not show the issue. For your kind reference, I have shared my sample project as well as generated presentation. I have used Aspose.Slides for .NET 2.0 5.6.0 dll for my verification. Please share, if the issue still persist for you.

Thanks and Regards,