Appointments+ 1.7.1 just broken my gcal!

I wish I had never upgraded! Not only did you break my connectivity to gcal, forcing me to get new credentials. Once I updated my appointments (hoping to fix the badly scheduled ones due to your lack of support for DST), ALL OF MY APPOINTMENTS ARE NOW MESSED UP! 489 of them! Some of them are putting client names in the title, many of them are NOT. This is an emergency for my client and I need this fixed today!