Anybody else been having trouble with it? Since upgrading from MobileMe I've had intermittent problems with the calendar app - adding new events and trying to save them gives the error message "Cannot Save Event. No Calendar has been set." Trying a second time gives the error message "Cannot Save Event. That event does not belong to that event store." It all started when I tried to sync exclusively to iCloud instead of my MBA. I've reset my phone to factory settings about 6 times since. It goes wrong every couple of weeks, and I need to reset it again. Pain in the hole, and incredibly time consuming to sort my phone out again. Also, every time I try and sync it, it doesn't seem to want to put my apps on, and I have to set everything up again from the phone, downloading from the app store. Takes ages. Anyone got any ideas? ---------- Found workaround. http://www.utilitap.com/weekcalendar/faq.php?item=ios5saveevent I'll be bookmarking this!