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I have a file that was signed by the company, but when I try to open the PDF file with Adobe Reader, it shows an error message:
"There is an error on this page. Acrobat may not display the page correctly. Please contact the person who created the PDF document to fix the issue."
However, when I open the file in other apps, it displays without any problem. Is there a configuration or version I should use to open this file in Adobe Reader? I will attach the file so someone can test it.
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There is an error in the way that "Assinado digitalmente" has been added to each page of the document.
For example on page 1: That symbol has been added to the page by additionally showing a form XObject FFT0 which in turn shows a form XObject F0 which then shows a bitmap image Im1. The error is in the form XObject F0:
q
1 0 0 1 2.8346 3.8346 cm
0.1867 0 0 0.1867 0 0.0934 cm
q
167 0 0 166 0 0 cm
/Im1 Do
Q
Q
Q
As you can see, there is a closing Q (restore-graphics-state) too many.
Some viewers ignore this kind of error. But while this error is indeed easy to ignore technically, it often indicates that somewhere there is a missing q (save-graphics-state) before that extra Q, and that the content between that missing q and the final extra Q is displayed incorrectly (at the wrong position, at the wrong scale, in wrong colors, ...). Thus, it is sensible that Acrobat does not show that broken XObject but warn instead.
You should inform the producer of that PDF about the error in their PDFs and ask them for a copy without it.