getThumbnail problem

I’ve tried to get the thumbnails of the following presentation.

But when trying to get the thumbnail of the 12 slide of the presentation, an exception is thrown.

Thanks for help.

same problem, but when getting thumbnail of slide 7.

Dear dev001,

Thank you for reporting, we will fix it as soon as possible.

Dear dev001,

The bug with HARBriefing.ppt has been fixed in Aspose.Slides 2.7.7.0. Please download it from this link.