Error: Type was not found or was not a compile-time constant: YourNativeExtension
You would usually get this error message at compile-time, when your code references something in a library that the compiler doesn’t know where to find. In the case of using a native extension, this means that your project’s SWF file was built without the native extension (ANE).
Make sure the .ane file of the native extension is included in your project – see the examples below for ways to do it.
1. On the command line
Add the path to your native extension with the -external-library-path option when you run MXMLC to compile your project:
mxmlc +configname=YourProjectName -output path/to/YourAppName.swf ProjectMainFile.mxml -source-path+=path/to/src -external-library-path+=path/to/your/native/extension
2. In Flash Builder
Select Project > Properties > Flex Build Path > Native Extensions > Add ANE… and add the native extension’s .ane file to your project: