Running Air app from Flex

[color=“gray”]I’m not sure this is the right place to ask my question, but Flex is basically a library that interfaces with Flash, so this forum will do.[/color]

I have Flex Builder 3 and can sucessfully run Flex apps when clicking the green run button. However, when I attempted to run someone else’s Flex app wrapped within Air, the run button does nothing - no error messages at all. I have installed Air 1.5 and made sure that the XML file specifies it as version 1.5…