I just read the MacRumors article and that sounds exactly what happened here. I have not heard of other Chronos users reporting similar but they have almost zero tech support so it would be difficult to find out if other users are experiencing this.
I did download a newer test version, from their website, and experienced the same 'unexpectantly quit' problem as well, which seems to confirm this.
I also agree that once I have fully purchased an app, Apple should not be messing with it regardless of what the developer may have done after the fact.
