Had an issue building from source using readme. Step 2 worked:
2. In the ant_on_air directory, run: ant [-DFLEX_HOME=/path/to/apache/flex/sdk] [-DAIR_HOME=/path/to/air/sdk] Step 3 failed here for me. 3. In the installer directory, run: ant build [-DFLEX_HOME=/path/to/apache/flex/sdk] [-DAIR_HOME=/path/to/air/sdk] Did not have a build file in that directory. Had to go back to the root of the folder and build from there. Build was successful from the root at that point. Other than that it seemed to be fine. -Mark