"Couldn't load gnustl_shared: findLibrary returned null"

I’ve been getting the following error when trying to launch on a Nexus S API 10 AVD:

08-27 00:31:32.747 773-773/com.YourCompany.MyProject E/dalvikvm: Could not find class 'com.epicgames.ue4.GameActivity$10', referenced from method com.epicgames.ue4.GameActivity.onResume
08-27 00:31:32.767 773-773/com.YourCompany.MyProject E/AndroidRuntime: FATAL EXCEPTION: main
                                                                       java.lang.ExceptionInInitializerError
                                                                           at java.lang.Class.newInstanceImpl(Native Method)
                                                                           at java.lang.Class.newInstance(Class.java:1409)
                                                                           at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
                                                                           at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1561)
                                                                           at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
                                                                           at android.app.ActivityThread.access$1500(ActivityThread.java:117)
                                                                           at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
                                                                           at android.os.Handler.dispatchMessage(Handler.java:99)
                                                                           at android.os.Looper.loop(Looper.java:123)
                                                                           at android.app.ActivityThread.main(ActivityThread.java:3683)
                                                                           at java.lang.reflect.Method.invokeNative(Native Method)
                                                                           at java.lang.reflect.Method.invoke(Method.java:507)
                                                                           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
                                                                           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
                                                                           at dalvik.system.NativeStart.main(Native Method)
                                                                        Caused by: java.lang.UnsatisfiedLinkError: Couldn't load gnustl_shared: findLibrary returned null
                                                                           at java.lang.Runtime.loadLibrary(Runtime.java:429)
                                                                           at java.lang.System.loadLibrary(System.java:554)
                                                                           at com.epicgames.ue4.GameActivity.<clinit>(GameActivity.java:2664)
                                                                           at java.lang.Class.newInstanceImpl(Native Method) 
                                                                           at java.lang.Class.newInstance(Class.java:1409) 
                                                                           at android.app.Instrumentation.newActivity(Instrumentation.java:1021) 
                                                                           at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1561) 
                                                                           at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 
                                                                           at android.app.ActivityThread.access$1500(ActivityThread.java:117) 
                                                                           at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 
                                                                           at android.os.Handler.dispatchMessage(Handler.java:99) 
                                                                           at android.os.Looper.loop(Looper.java:123) 
                                                                           at android.app.ActivityThread.main(ActivityThread.java:3683) 
                                                                           at java.lang.reflect.Method.invokeNative(Native Method) 
                                                                           at java.lang.reflect.Method.invoke(Method.java:507) 
                                                                           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
                                                                           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
                                                                           at dalvik.system.NativeStart.main(Native Method) 

I googled and found this and that android - Why isn't libgnustl_shared.so being copied from my APK? - Stack Overflow, c++ - Android ndk link failed on libgnustl_shared.so - Stack Overflow. But I’m no programmer so I might be doing something wrong. The answer in the first link seems to have succeeded but I have no idea where to put all the lines (although I HAVE tried understanding exactly how this Android.mk works…).

Thanks.