ronmichael said:

For some reason ActivityUpdating (or Deleting or Adding) is just not firing for me.  I bring up the appointment editor form, type some stuff, hit Save, my schedule page reloads, but the server event never fires.  Any ideas why?

Do you have a data provider attached to the WebScheduleInfo?  If you are attaching a custom data provider to the WebScheduleInfo, did you set the DataUpdate property to your custom data provider IDataUpdate implementation.  I recall there is a check WebScheduleInfo performs, to see if it is attached to a writeable-data provider that is able to update, delete and insert activities.