Logcat error message – Attempted to destroy barrier with non zero count

I’ve solved the problem. I was using an old version of Parse library and it was interfering with the new one. I’ve just changed the Parse.initialize() lines to:

Parse.initialize(new Parse.Configuration.Builder(this)
        .applicationId("MY_APP_ID")
        .clientKey("MY_CLIENT_KEY")
        .server("MY_SERVER_URL")
        .build()
);

and it worked!