I have been trying to delete an appoint in my calendar and it will not disappear from the calendar after I delete it. Yet, when I click on it I get the message "Appointment deleted externally. Changes will be lost and the viewer closed." If I press the OK button, nothing happens and the appointment is still on the calendar. I have synchronized the calendar with my Microsoft Outlook, giving outlook the preference for conflicts, and the appointment still shows on the calendar (even though it's not there???). Any ideas on how to remove it completely?
