More specifically:
this is the error received after compile -
java.lang.UnsatisfiedLinkError: Library /data/data/b4a.example/files/libpdfview2.so not found
at java.lang.Runtime.load(Runtime.java:409)
at java.lang.System.load(System.java:536)
at ice.pdfviewer.pdfviewerwrapper.init(pdfviewerwrapper.java:109)
at b4a.example.inst._activity_create(inst.java:251)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at b4a.example.inst.afterFirstLayout(inst.java:89)
at b4a.example.inst.access$100(inst.java:16)
at b4a.example.inst$WaitForLayout.run(inst.java:74)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
at dalvik.system.NativeStart.main(Native Method)