Hello upgraders, There is a slight niggle with the update process, just need to follow these steps and you wuill be back up and running in no time!
You need to change the calendar application setting which can be don by going to Settings->Manage Calendars->Which calendar app?, Make sure Google Calendar API 2.2 is the only one ticked.
Next you need to go into "Choose calendars" and untick all your calendars, then exit settings, then come back in to settings and click choose calendars and tick your calendars again and it should all work again.
Comments below please
