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I'm using FlashDevelop, attempting to put together an AIR AS3 Projector project. Basically I'm just creating a new project, with no code. When I hit F5 a cmd window pops up, and says, 

Starting AIR Debug Launcher...

invalid application descriptor: Unknown namespace: http://ns.adobe.com/air/application/4.0
Press any key to continue. . .

I asked about this over in the FlashDevelop forum and the moderator told me to download a merged Flex SDK + AIR SDK 4.0 using Tools->Install Software. I did that, it did not help (although possibly it may help with other things).

What's going on here?

TomJeffries
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    Don't know about FlahDevelop, but in FlashBuilder you get this error, when the air sdk version number in application-descriptor.xml from your project does'nt match the installed sdk. After downloading the new sdk you might need to tell your IDE, it should compile against it, too. [This tutorial](http://francescomaisto.wordpress.com/blog/tutorial-how-to-change-air-sdk-in-flashdevelop/) might help you. – T. Richter May 12 '14 at 08:02
  • @T.Richter, you may want to post that as an answer. I think you're right. – CodeMouse92 May 12 '14 at 19:49
  • Yes, T. Richter, that turned out to be the answer- thanks! Please post it as an answer so I can mark it as the right one. – TomJeffries May 12 '14 at 22:10
  • Thanks for the info. Turned it into a proper answer. – T. Richter May 14 '14 at 07:49

3 Answers3

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This error occurs, if the sdk version in the application-descriptor.xml from your project does'nt match the installed sdk. After downloading the new sdk you must tell your IDE, it should compile against it, too. This tutorial might help you.

T. Richter
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Yes, you can manually dowload them here:

AIR SDK

http://www.adobe.com/devnet/air/air-sdk-download.html

FLEX SDK

http://www.adobe.com/devnet/flex/flex-sdk-download.html

then extract the SDK to a folder on your computer and specify the correct path as described in Step 2 of this tutorial.

andrecoweb
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Use Netbeans, Create a PHP Project, and in the 'Run configuration' , choose 'Script(run in command line) for the 'Run As' parameter. choose the adl.exe file from your sdk install folder (mine is F:\softwares\AirSDKCompiler\bin\adl.exe ) for the 'PHP Interpreter' parameter!

set the 'Index File' parameter to your Application Descriptor file (First_app.xml or whatever your file name is..)

in your application descriptor, check for this code (check the version of your sdk)

<application xmlns="http://ns.adobe.com/air/application/17.0" minimumPatchLevel="0">

Deleter your default index.php, and just Run > the project, It works like a champion!!!!

aeroarunn
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