I'm having an issue too. Downloaded and installed fine but I can't get past the "terms and conditions" page. I click "I accept" or "I don't accept" and nothing happens...
It's working perfectly on my Bold. Much better/more stable than the leaked beta from several months ago... after about 10 minutes of using it, I am very pleased...
When I installed it, I got an error, I think 404 uncaught exception. I did a battery pull and it's fine now. Saved my contacts, saved my conversation earlier. I still have OS 4.7.1.40. Didn't get around to upgrading yet.