# Running Air app from Flex

**URL:** <https://forum.kirupa.com/t/running-air-app-from-flex/282579>\
**Category:** flash\
**Created:** [February 23, 2009, 9:25pm UTC](https://forum.kirupa.com/t/running-air-app-from-flex/282579 "2009-02-23T21:25:15Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![NeoDreamer](https://avatars.discourse-cdn.com/v4/letter/n/ccd318/32.png) [@NeoDreamer](https://forum.kirupa.com/u/NeoDreamer)\
**Post date:** [February 23, 2009, 9:25pm UTC](https://forum.kirupa.com/t/running-air-app-from-flex/282579/1 "2009-02-23T21:25:15Z")

</div>

[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…