ical can't create event
I am running Lion OSX 10.7.3, and iCal version 5.0.2.
When I try to create a new event in any day of the calendar, i get the following message:
You can’t add or change events in the Birthdays calendar.
Events in the Birthdays calendar come from your contacts in Address Book. To change them or add birthdays, use Address Book.
I do have birthday events in the calendar. They were created in the Address Book.
But I can not add any new events.
How can I fix this problem?
Thanks in advance.
Mac mini, iOS 5.0.1