ICal and Exchange Errors

Question

Hi everyone.  I'm new to Mac but experienced with iPhone and iPad.  I have a brand new iMac running Lion with all the latest updates.  I have my corporate Exchange account configured just like I do with my iOS 5 iPhone and iPad.  On the Mac, Address Book and Mail work fine.  iCal however is having some issues. 
I have two calendars on my Exchange account, my main one "Calendar" and another one "Team Calendar".  When I fire up iCal it just says "Updating..." for a long time.  Clicking on "Calendars" I see both of my calendars listed.  This is what happens on my iOS devices.  However, only events from "Team Calendar" show in iCal.  Nothing from "Calendar" shows.  Not a single event.  "Team Calendar" is very simple with basic events (not meetings with attendees).  My main "Calendar" has tons of repeating events, meetings with attendees, events that I've yet to respond to, etc.  I'm suspecting something is tripping up iCal.  Like I said, works fine on iPhone and Pad.
I saw some posts in this community to delete ~/Library/Calendars/Calendar Cache    I did that but it didn't fix the problem.  And like I said, this is a brand new Lion install and this is the first time I've used iCal.  My company runs Exchange 2007 from what I understand.  I checked Console and found this:
3/1/12 7:40:54.089 PM iCal: Could not find Meta Data for persistent Store
3/1/12 7:43:02.150 PM iCal: Unexpected type EWSMeetingResponseMessageType for calendar Calendar in account Pega
Any ideas?
Thanks.
Adam

Answer 1

With 10.7 I could not see either of the mentioned cache files to delete them - which puzzled me (I did not have to unhide Libaries, and I could see other cache entries, so pretty sure it wasn't just hidden?!)
I changed the port to 443 with SSL on and this allowed the Delegates tab to populate, and could even resolve a name of one of the exchange server users - so I know the connection is good. (And contacts and email are synching to the same work server). And like abfield, the iPhone and iPad sync the calendar perfectly both ways.
My errors are
25/06/14 12:38:04.233 PM iCal:  error = Error Domain=CalExchangeErrorDomain Code=-11 "iCal can’t refresh events in the calendar “Calendar”." UserInfo=0x7fcf4cb9af90 {CalFailedOperationKey=<CalExchangeSyncFolderItemsOperation: 0x7fcf3a978fd0>, NSLocalizedDescription=iCal can’t refresh events in the calendar “Calendar”., NSLocalizedFailureReason=The account "work" currently can’t be refreshed.}
25/06/14 12:37:36.462 PM iCal: Unexpected type EWSMessageType for calendar Calendar in account work
Apple phone support were apologetic but basically said that connections to Exchange Server were too hard as there were too many settings. Duh.
Reading others' posts it appears that if a user has Outlook 2013, that there are now some incompatible Status options that can be set for appointments.
This is similar to the issue in this thread but also an issue reported here https://discussions.apple.com/message/22514700
I have copied the content here:
Checked out the Console logs and it throws these three errors below.  There is something with the "LegacyFreeBusyStatus" that is causing the sync to fail.  Outlook 2013 has a new status of "working somewhere else".  I had used it for a few items.  I also found an item that had a Null status (like what it is pointing to in the error).  Removed that item and changed all the others to a valid stauts for previous versions of outlook.  ie. Free, Busy, etc.
2/12/13 3:29:32.871 PM CalendarAgent[19447]: [com.apple.calendar.store.log.exchange.queue] [-[CalOperationQueue executeOperations] :: [<EWSCalendarItemType 0x7f9dfac9e9b0> setNilValueForKey]: could not set nil as the value for the key LegacyFreeBusyStatus.]
This all suggests that one or more of my appointments has a status that iCal can't cope with.
Is there a way to narrow down which these are and to blanket change them in Outlook 2013?