I'm opening this discussion up again, because it seems the Adobe has changed the package contents of the Air installer and it no longer works in Greg Neagle's packager. All I get are failed installations. When I try to package it with Composer it packages fine, but when I try to install it and then run and Air application it tells me that the Air Package is corrupted. Any help would be appreciated.
I've had success with Greg's script, however the permissions are borked, so I wrote a script which runs "after" which fixed the permissions.
Then, when testing, I ran into issues where it refused to install. Discovered that it failed if I had multiple partitions, and AIR was already installed on one of them. Created an fstab entry to preclude the other partitions from automagically mounting.
Even then, at imaging time, it failed about 50% of the time.
Finally, I snapshotted the install and created a .dmg. Problem solved.