Export Mobile App to Air Exe/Dmg

I have an application for mobile devices that I want to export as an exe or dmg.

I found online to use ADT. Problem is is that I get errors (different ones depending on if air SDK i use)

If i use air 3.0:

AIR file at [app path]/app.air could not be converted.

The error was ""

If I use air 3.1 or air 3.2 sdk

SDK is missing file [my path to air]\lib\nai\bin\naip.exe

I'm running

java -jar [path to air]\lib\adt.jar" -package -target native app.dmg app.air

I've also tried

java -jar [path to air]\lib\adt.jar" -package -target native app.exe app.air

Any ideas? Apparently there is an integrated Flash Builder 4.6 tool, but for some reason the option under export release doesn't exist for mobile projects - strange...