We are using v17.6 of Aspose.Pdf to create our .pdf files, and these work fine. However, when these get a digital certificate applied to them, our users are no longer able to open the files in Acrobat Reader XI. They just see a dreaded “131” error message as soon as they try to open them.
They can preview these digitally-signed .pdf files (including the digital certificate) in Outlook, they can view them using Google Chrome, but in Reader XI, they just see this error.
We urgently need our users to be able to open these files in Reader.
Do you have any suggestions ?