Stuff it a crappy program. Other open formats work better. The Stuffit's software is unstable, stale, and over priced. Even their website is misleading. You have the get Expander with a 30 day demo of deluxe. After going through a form and email to get a download link. For every-platform is runs on it screws it up. Sadly I've used them all. I would say for them just to stop trying, but they already have.