Get java.lang.NoSuchFieldError on ver 1.0.8

[elnatand]

java.lang.NoSuchFieldError: No static field activity_gallery of type I in class Lcom/vlk/multimager/R$layout; or its superclasses (declaration of 'com.vlk.multimager.R$layout' appears in /data/app/com.example.elnatan.myapplication-2/split_lib_slice_9_apk.apk)
at com.vlk.multimager.activities.GalleryActivity.onCreate(GalleryActivity.java:54)
at android.app.Activity.performCreate(Activity.java:6303)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2402)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2509)
at android.app.ActivityThread.access$1000(ActivityThread.java:153)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1373)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:5523)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)