I guess I'm the only person who has had this issue. Can't get help from support - nothing but the run-around. Told me to submit a webcase, but the online form won't let me. There's no option. Tried calling, but they're only interested in helping people with the new version. So I sit here with software that won't install, getting more and more frustrated and realizing that this is what happens when there is no competition. There is no other software out there like the Creative Suite - Photoshop, Illustrator, etc. I have CS5 at work and have been using Photoshop for years. But when I get a copy I can use at home, I can't get any help from them. Not blaming the forum users, just needed to vent.
I've tried using the "cleaner" to get rid of the trial version of Photoshop Elements - when you're accustomed to the real thing 8+ hours a day at work, PE just won't do.
I'm not sure about installing or activating (?) Rosetta. I'm a pretty new Mac user, always had to use PCs at work until last year when we finally convinced management to go Mac for the design department.
I've no trouble installing other software on the Macbook Air. It could be as simple as a defective disk, but with Adobe unwilling to help, I don't know.
I'm writing this more than a year after yours, SeventhStranger. But today I had the identical problem with CS3 installation and my Mac Air/OS Lion.
Thanks to Google Search Results and your post, my problem is now solved!! Most of all, Bob Levine, to you I owe a huge THANK YOU.