"That event does not belong to that event store" when trying to create a new calendar event I'm trying to save a new event on iPhone calendar, but it just keeps giving me this error:


  Cannot Save Event — That event does not belong to that event store


What can I do to fix this?



I'm using Google Calendar by default, but I get the same error even if I try to use another calendar, so I presume the fault is not in Google's servers. Never encountered this problem before – just started seeing it today. (Using iPhone 4 and iOS 5.0.1.)
Try these:


Close the Calendar app completely, then retry (this worked for me) 
Reboot iPhone
Try editing the default calendar setting (Settings ->
Mail, Contacts, Calendars -> Calendars)


If none of those helps, you could read through this apple.com thread for more tips.