🚀 go-pugleaf

I initially posted a question in the Acrobat forum and received some helpful
replies; but I think that the issue has now turned into a PDF workflow
issue, though I might be wrong.

The problem is simple: When I enable comments in a PDF file using Acrobat
7.0Pro MiddleEastern edition, it appears that only users with Adobe Reader
Middle Eastern version have commenting enabled, even though there are no
MiddleEastern features or fonts used in the file. Regular flavours of Adobe
Reader give the following error message when opening the document:

"This document contained certain rights to enable special features in Adobe
Reader. The document has been changed since it was created [not true!] and
these rights are no longer valid. Please contact the author for the original
version of this document." The document then proceeds to open normally, but
without commenting enabled.

Well, I am the author and I have no solution.
Any suggestions would be very welcome, even if just to tell me where I might
turn for an answer.

Thank you,
Ariel