You will need to open the Android SDK manager and make sure you have that API installed.
On my computer that is here:
C:\Program Files (x86)\Android\android-sdk\SDK Manager.exe
You might also find a link to it in your Start Menu Programs Folder -- Inside the Android SDK Tools Group
My advice is to change this to the newest API and download that in the Android SDK manager.
Then also change it here in Fusion to the same API number. I can't think of a reason why you need to use an older API but maybe there is, but you have to install an API to build anything. Newer APIs would support more features and perhaps have some performance gains.
** Don't forget to change the Android Package name inside your application properties under the Android tab to something unique. (Change from com.mycompany.myapplication) to (com.mycompany.gamenamehere) (GameNameHere=The name of your game). Do not include any spaces and no special characters. Just plain letters and numbers.
Thank you. I get this error (defaults: Error: unable to open './flex-config.xml') when trying to compile SWF. Do you know what the problem is on this?