Thanks for your posting and using Aspose.Cells.
It is quite an older version. We do not maintain older versions and its related files like documentation if they are 1 year older. If they are less than a year old, then you can obtain the older versions and its related files. It is Aspose policy and mentioned in EULA. We are sorry for the inconvenience.
We recommend you to upgrade your application with the latest version, since it is quite enhanced and supports more features and more importantly, all the bug fixes are provided in latest versions only.