HI bwtr, The .ai file needs to be v8 or below. I did create the Cross Section in Illustrator, saved all the holes as a group, and then created a compound path for the openings. While you can create the paths in Photoshop, Photoshop does not handle the compound path instructions. :-/ I thought PS exported paths as v3 .ai files so I'm not sure why they're not importing. Mark