An Error exists on this page. Acrobat may not display the page correctly. Please contact the person who created the PDF document to correct the problem.

I have a document that I created with Acrobat Pro X for Mac in March 2017.

It was sent to several friends who enjoyed the article. Now I¹m trying to

send it again but it will not open in in Acrobat Pro X nor Acrobat Reader

DC. I receive the error code "An Error exists on this page. Acrobat may not

display the page correctly. Please contact the person who created the PDF

document to correct the problem.²

The document opinions in Apple Preview, PDFpen Pro, and non-Adobe readers.

Any idea what¹s happening