java.lang.IndexOutOfBoundsException occurs on Samsung S Advance

[Sleeper9]

I have a problem on the mentioned device with the library. If I click fast enough on the Next button, I get the following exception:

5-19 12:38:41.079 5416-5416/com.frontendart.qualitygate.android E/AndroidRuntime: FATAL EXCEPTION: main java.lang.IndexOutOfBoundsException: Invalid index 6, size is 6 at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251) at java.util.ArrayList.get(ArrayList.java:304) at com.heinrichreimersoftware.materialintro.slide.SlideAdapter.getSlide(SlideAdapter.java:66) at com.heinrichreimersoftware.materialintro.app.IntroActivity.getSlide(IntroActivity.java:504) at com.heinrichreimersoftware.materialintro.app.IntroActivity.canGoForward(IntroActivity.java:195) at com.heinrichreimersoftware.materialintro.app.IntroActivity.nextSlide(IntroActivity.java:160) at com.heinrichreimersoftware.materialintro.app.IntroActivity$2.onClick(IntroActivity.java:144) at android.view.View.performClick(View.java:4162) at android.view.View$PerformClick.run(View.java:17082) at android.os.Handler.handleCallback(Handler.java:615) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4856) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1007) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:774) at dalvik.system.NativeStart.main(Native Method)

The intro screen also hangs for a bit (that must be because it loads some data in the background), so I can click on Next button quite a few times, and nothing happens, except for this exception suddenly.