I too have a mac. The first one to print was a NIGHTMARE. I promised myself with the second one, I would only try twice. On the very first try it was correct. I don't know why it printed correctly. I made a few copies of the pattern so I wouldn't have to go to the website. I printed it out in safari. My mac is an older computer 10.3 I will not print pattern after pattern. It was a waste of paper and ink. I try twice and that's it. Sorry quilters cache.