问题
I'm having difficulty getting a Flex mobile project to run on my machine. When I try and run the project I get the following error:
Process terminated unexpectedly.
invalid application descriptor: Unknown namespace: http://ns.adobe.com/air/application/16.0
Launch command details: "C:\Program Files\Adobe\Adobe Flash Builder 4.7 (64 Bit)\sdks\4.6.0\bin\adl.exe" -runtime "C:\Program Files\Adobe\Adobe Flash Builder 4.7 (64 Bit)\sdks\4.6.0\runtimes\air\win" -profile mobileDevice -screensize 320x460:320x480 -XscreenDPI 163 -XversionPlatform IOS "C:\Users\dean.grobler\Adobe Flash Builder 4.7\ProsperityHealth\bin-debug\ProsperityHealth-app.xml" "C:\Users\dean.grobler\Adobe Flash Builder 4.7\ProsperityHealth\bin-debug"
I'm using Flash Builder 4.7. I've tried to read up on similar issues on the web but the few answers that I'm finding either don't work or are very vague.
回答1:
Your problem is just you have indicate an unavailable AIR SDK version (16) for your current used Flex SDK (4.6.0).
So to avoid such problem you can :
1. Use the installed AIR SDK version with your Flex 4.6.0 SDK which is usually 3.x ( if you didn't have upgraded it ).
2. Install the AIR SDK version 16 for your Flex 4.6.0 SDK.
How ?
1. You can get the installed version of the AIR SDK of your Flex SDK by running the AIR Debug Launcher (ADL) exe which is : "C:\Program Files\Adobe\Adobe Flash Builder 4.7 (64 Bit)\sdks\4.6.0\bin\adl.exe" using cmd.exe :
You can also get it more simply when creating a new project :
In my case it's : 3.1.0, so in my project-app.xml, I should put :
<application xmlns="http://ns.adobe.com/air/application/3.1">
2. To upgrade the AIR SDK version of a Flex SDK, we do :
a. Make a backup ( if you want ) of your current SDK dir, which is in your case here : "C:\Program Files\Adobe\Adobe Flash Builder 4.7 (64 Bit)\sdks\4.6.0". You can in any time download any Flex SDK version from Sourceforge.
b. Download your desired AIR SDK ( version 16 for your case ) from Adobe here, the SDK not the runtime of course, and you don't need the compiler also, just the SDK.
c. Unzip the downloaded file ( a zip archive ) and then copy its content and paste it into the Flex SDK dir with overwriting any existing content.
d. Finally, open Flash Builder and create a new project and select your appropriate AIR SDK :
In my case, I installed many combinations of Flex and AIR SDKs.
Hope that can help.
来源：https://stackoverflow.com/questions/32432931/flash-builder-launch-failed-invalid-application-descriptor-unknown-namespace