Kiip crashes on update from "v2.3.3 Android SDK - 06/05/2017" to "iOS and Android Unity Wrapper - 10/19/2016"

[Will5]

We are updating our Android app from Native to Unity. Kiip SDK works, except on app update. I get a crash with the following Exception:

Caused by: java.lang.NullPointerException
at me.kiip.internal.d.g.(KiipSDK:88)
at me.kiip.internal.d.g.(KiipSDK:72)
at me.kiip.internal.d.c.c(KiipSDK:244)
at me.kiip.internal.d.c.a(KiipSDK:224)
at me.kiip.internal.c.e.(KiipSDK:175)
at me.kiip.internal.i.d.(KiipSDK:121)
at me.kiip.internal.i.d.a(KiipSDK:60)
at me.kiip.sdk.Kiip.init(KiipSDK:65)
at com.kiip.KiipPlugin$KiipInit.run(KiipPlugin.java:64)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

I'm thinking that it has to do with the different Android SDK versions (downgrade). I see a pull request was merged it to update the Unity Wrapper to the latest Android SDK, but I don't know if it is stable since there has been no official release.