iCal and I have been round a few times in the last two several weeks. iCal is winning. Grrrrr!!! Previously, I had used one of Zapptek's apps to set another client to handle ical invitations. In order to change back to Mail as default, iCal must be reinstalled. I did that and reapplied the combo updater (Tiger). I backed up the calendars using the command in iCal. The next day, iCal wouldn't start. I pulled everything methodically. Turned out to be something in the cache. Upon restarting there were the default Home and Work calendars. I restored the back up. Now the Calendar list displays nothing. I can see items for the various calendars by displaying search results and the calendars appear on the Calendar list in an item info disply, so I know the restore worked. Two other weird behaviors: If I click the Day button, the main iCal window resizes to about 50%. And, when I start Mail, iCal starts too. Any thoughts on returning proper behavior? Bob