Air won't install on Windows 7

Yes, I did what you both suggested and it still didn't work.  What did finally work was installing under a different user profile (I created a new one).  It downloaded just fine on the new profile, but still wouldn't work on the other (my regular) profile.  So I'm functioning on two profiles and that's fine for now.  I'm still curious what the real issue is with the other profile, but I definitely I don't want to delete that profile -- they did that to me at work and it took quite awhile to get "my world" back!

Thanks.

Since the error message says the installer is damaged, I assume you tried downloading a new copy?

Reboot and try installing again?