I’m trying to run the attached file, and I’m getting the “filled shapes are open” error. (As an aside, I wish the GFUI would give some indication which shapes are filled and open.) I’ve read many of the threads about this in this forum; the puzzling thing about this situation to me is that I don’t think I have any fills in this file at all. I’ve used Adobe Illustrator CC to click on each and every individual path in the file (there are a lot of them) and “join” all of them, one at a time.
It’s worth sharing that I’m brand-new at this (both Illustrator and GF) and maybe be making a colossal and super basic mistake. I’ll appreciate any wisdom somebody more experienced can share.