For anyone who still may be interested, Applause issued a new version 5.0.53, explaining (and apologizing) for the bad way they released it. The new version removes the Amplitude digital analytics framework entirely, explaining that they initially included it (as Adam said in his note) to get an idea of the user base.
I have installed it (after having to reset the permissions) and it seems to be working fine. I am going to keep using it for now – it meets my needs. I thinks they did a terrible job of managing the transition, but I don’t think they have bad intent.
I don’t see the new version on their website yet – I got it as an autoupdate from the older version.