No matter what I do, the xlsx file will not open. the code doesn’t error, it just ignores it. See my code below: Aspose ver 18.104.22.168
Thanks for your posting and using Aspose.Cells.
It is a strange thing that you are not getting error and also your code looks fine to us. Could you please attach your Project Portfolio.xls file for our investigation. We will look into it and help you asap. Thanks for your cooperation in this regard, we appreciate it.