Powerpoint files that had successfully converted to PDF now display with different background.
Problem: I have powerpoint files that had successfully converted to PDF. All of a sudden, when I open the PDF the background appears differently. The first image (top) displays the PDF as it should look, using Preview (the built-in Mac viewer). The second image (bottom) is of the PDF using Acrobat Pro XI (11.0.18). Instead of the blue gradient, the image is white. When another user opens the same PDF on her Windows machine it displays properly, blue gradient intact.
Related Forum Post: My issue is similar to the one linked below. That problem was resolved by Acrobat > Preferences > Accessibility > Replace Document Color was turned on when it shouldn't have been. In my case, the accessibility setting was fine.
PDF No Longer Has Dark Background When Exported from MS Word 201
OS: I'm running Sierra 10.12.1.
My thanks to anyone who can assist.
- curt

