Fine lines appear after importing in InDesign and export as Print PDF Hello all,Maybe someone can help me, I am a bit desperate. ;((I have created a graphic in Fresco, which I want to use in InDesign for a flyer.When I create a preview PDF from InDesign for my client (just for viewing on the computer), everything is rendered great.But as soon as I create a PDF according to the desired specifications of the printshop (standards: PDF/X-1a 2001 and profile: ISO Coated v2 300% (ECI)) I suddenly get fine white lines below the graphics.I have already tried everything, saved different formats: SVP, PNG, and also directly placed the Illustrator file. Always these unwanted lines appear!I have also sent from Fresco to Illustrator and re-exported from there as PNG or SVG, same problem - although the lines are not visible in Fresco or Illustrator itself at all!!!The funny thing is that I have already used another graphic from Fresco where this does not happen: No lines, no artifacts at all.What am I doing wrong, how can I save a clean file that I can use for printin