I’m trying to export an InDesign file for a postcard to PDF. The printer tells me there’s an error with my transparency settings, but I can’t track it down. The image is a simple solid block, with an inner shadow to create a neat fade effect.
I was on the old forums for years, but wasn’t able to retrieve my login.
EnFocus Inspector is a prepress tool my printer used to check the file, and found those errors.
I’m exporting to PDF right from InDesign using ‘High Quality Print’ setting. Some Googling showed I need to update the flattening setting, which I did. InDesign flattening setting