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Conversion pptx to ppt damages the file

Presentation pres = new Presentation(@“C:\Users\Lana\Desktop\Menlo Security Apr 25 2017.pptx”);
pres.Save(@“C:\Users\Lana\Desktop\Menlo Security Apr 25 2017_out.ppt”,SaveFormat.Ppt);

@oren10280,

I have observed your comments. Can you please share sample presentation generated result. Also please share which Aspose.Slides version you are using on your end. Please share the requested file so that we may further investigate to help you out.

Best Regards,

Adnan Ahmad

Hi,
We are using 17.1 Aspose.Slides version.
OriginalPPTXandDamagedPPT.zip (1.7 MB)
I have uploaded original pptx and the damaged ppt. Thanks

@oren10280,

I have worked with the presentation file shared by you and have been able to observe the background theme information missing in saved presentation. An issue with ID SLIDESNET-39119 has been created in our issue tracking system to further investigate and resolve the issue. This thread has been linked with the issue so that you may be automatically notified once the issue will be fixed.

We are sorry for your inconvenience,

Mudassir Fayyaz