I'm receiving the following error:
Process terminated unexpectedly.
invalid application descriptor: Unknown namespace: http://ns.adobe.com/air/application/2.6.0
Launch command details: "C:\Program Files (x86)\Adobe\Adobe Flash Builder 4.5\sdks\4.5.0\bin\adl.exe" -runtime "C:\Program Files (x86)\Adobe\Adobe Flash Builder 4.5\sdks\4.5.0\runtimes\air\win" D:\MCE\FB45_Projects\CM20111021a\bin-debug\CM-app.xml D:\MCE\FB45_Projects\CM20111021a\bin-debug
to the best of my knowledge I am using the suggested minimum namespace.
1. cleaned the project,
2. restarted FB
with no luck.
Lastly, I'm using FB4.5 for PHP, but this IS NOT A PHP APP.
Or you may have updated your runtime recently, in which case you could be running 3.0 or something. Try creating a new blank AIR app and see which runtime is automatically placed in its -app.xml.