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so you won't be able to upgrade it through the normal means (which could potentially break compatibility)

<@U0BFDUP0E> please could that be why view binding with Butterknife is throwing NPE on views? And I also noticed that the generated classes have disappeared. 

Please I'm sorry if this is the wrong place to ask this question.

Never mind. I've found the solution here <https://github.com/JakeWharton/butterknife/issues/463>.

Sorry for bugging you please.