Couldn't find libOFAndroidApp.so

Hi,
I followed Android guide and I'm trying to build an example for Android (I tried AndroidEmptyExample and AndroidImageExample) with no success Image may be NSFW.
Clik here to view.

I think the significant error is:

01-03 17:33:45.050 23325-23325/? E/AndroidRuntime: FATAL EXCEPTION: main
                                               Process: cc.openframeworks.androidImageExample, PID: 23325
                                               java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/cc.openframeworks.androidImageExample-2/base.apk"],nativeLibraryDirectories=[/data/app/cc.openframeworks.androidImageExample-2/lib/arm, /vendor/lib, /system/lib]]] couldn't find "libOFAndroidApp.so"

I feel stuck, any clue please ?

I tried with 0.9 Android release and with Master from git
I tried with Android emulator (arm ABI) and android device (android 5.0.2)
I'm using NDK r10e and osx 10.10.5

thanks