I have tried to instantiate a new Presentation object, but get a null reference exception thrown. I am able to open other ppt files, but not this one. I have attached the file, and here is my code snippet:
Thank you in advance.
FileStream fileStream = new FileStream(filename,FileMode.Open,FileAccess.Read);
Aspose.Slides.Presentation pres = new Aspose.Slides.Presentation(fileStream);