This is an AIR project, you can open -app.xml, on the basis of which the project is built, and check the application namespace
<application xmlns="http://ns.adobe.com/air/application/1.0">
Introduces AIR 1.0 (Flex SDK 3.2)
<application xmlns="http://ns.adobe.com/air/application/2.0">
Introduces the AIR 2.0 project (SDK 4.0?)
If this is a WebProject (which runs on FlashPlayer), check the .actionScriptProperties file in your project. In one of my project files, under the compiler tag, I can find a property named flexSDK="Flex 3.2" . I'm not sure what this will be for each project, since I could not find the same property for other projects.
Another thing you can check is the target version of FlashPlayer with which you are going to compile. Check the htmlPlayerVersion property of the htmlPlayerVersion tag in your .actionScriptProperties file.
If htmlPlayerVersion is greater than or equal to 10.0.0 , you should use Flex SDK 3.2 or higher.
midhunhk
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