Ok. Conversion of PPT to PPTX in 5.9 means opening a PPT file and saving it as PPTX. Correct me if I am worng. Because I am using Stream to write the data and file is to be saved in Client machine.
Further I could understand from your reply that as of now the old classes in 126.96.36.199 are available in 5.0 also. This sounds good. But in future I may upgrade to some other new Aspose.Slides. I need to confirm as I thought of having the old code as such for generating PPT and for PPTX output I thought of writing new codes with PPTX class.
If many old PPT classes are replaced, there may be a huge development required in future. Will even PPTX classes be replaced in future versions?
I have one more doubt. I tried developing PPT using PPTX class and when opened in MS Powerpoint 2007 or 2010, it opens perfectly. But the file is not opened in MS Powerpoint 2003. (Showing error that the file must have been saved with some other extension). Can u suggest me some solution for this?