Had to re-install of my Adobe programs due to an overal computer issue.
I am running Mac OS X 10.7.5 - Adobe Acrobat X - Adobe InDesign CS5.5
I have not had this issue before the reinstall. I have a Adobe InDesign file and did an export to PDF.
I chose Adobe PDF Preset - Smallest File Size, I used the default settings for Smallest File Size preset.
When I opened that file in Acrobat and went to Tools > Print Production > Flattener Preview
When the Flattener Preview window opens at the top it show preview settings. Under the "Highlight" section
the selections are grayed out. I am using items with tranparency within the PDF. Also I have successfully used this
option with this file before. Not sure what is causing the highlight options to be grayed out.
Any help would be much appreciated. Thank you!