Snow Leopard: calendar contents lost

I upgraded from 10.5 to Snow Leopard. I too have lost all my calendars (and contents). I didn't notice until after I had synched my ipod which really irritating as it is all gone now.

You are not alone. iTunes says that it cannot sync my calendars and contacts because it cannot find any. But the calendars and contacts are in fact there. I have been working this issue with Apple and hope to hear a resolution soon.

This happened to me as well when I upgraded straight from Tiger to Snow Leopard. Everything transferred fine except iCal. (Come on Apple! You're supposed to make **** like this seamless!)

I tried everything suggested in the following articles- none of them worked.

http://support.apple.com/kb/TS1906
http://discussions.apple.com/thread.jspa?threadID=1364074
http://support.apple.com/kb/TS1880

I do have Backup, but I couldn't even restore my iCal from that after trying multiple times from different backup files in multiple ways (so don't feel bad you didn't have Backup- it's not working anyway!).

After searching endlessly and trying everything, the only way I was able to get my Calendar back was to get it from my iPhone (which I'd been avoiding syncing because I was afraid my Mac might overwrite its calendar with emptiness). It prompted me by saying there was a big discrepancy and what should it do (I told it to proceed with adding events to my Mac's iCal). So that worked when nothing else would.

But maybe some of the above articles will work for you. Just wanted to get my experience out there in case anyone else is in the same situation.

Arrgh I just realized my iPhone only had the last 60 days of events, meaning I lost my entire history. 😟 I like having my history of events so I can refer to old doctor's appts, etc...

If anyone knows how to restore iCal in Snow Leopard from a Tiger Backup (the .Mac software before Time Machine), or any other way, please let me know! Saaaad!

I upgraded from Leopard to Snow Leopard, and all of my calendar events except for four (chosen seemingly at random) are missing. Ouch!

Never mind my previous post ... I hadn't run iCal since I upgraded laptops, and I guess I had forgotten to copy over my Calendars from my previous system. Nothing to do with Snow Leopard, sorry for the noise.

Likewise, after jumping from Tiger to Snow Leopard, I can see my calendars, but not the contents. When I try to export an .ics from my wife's iMac desktop (Tiger) and try to repopulate my calendars on my laptop, my iCal says it can't read the calendar filed exported by the iMac.

Am having the same problem. Also upgraded from Tiger, have lost several years of calendar events. Syncing from an iPod Touch got me a month or so but lost the rest. Is there a fix from backup??

For what it is worth I had partial success using my BackBlaze backup. I copied Calendars/Events directly from a BackBlaze backup zip into the newly created SL Calendars/Events. Unfortunately the BackBlaze backup did not have any Events that had been scheduled within the last 2 months or so. I'm not sure whether this was an issue with BackBlaze itself or if (10.4 Tiger) iCal just somehow kept those Events without committing them into the Events folder (but for over 2 months?)

Fortunately I'd uploaded my calendars onto MobileMe, and so I could re-sync through that and recover all my calendar data. Still not sure what I'd have done if I didn't have MobileMe.

My wife's computer lost most of her iCal events when we upgraded from Tiger to Snow Leopard. I was afraid to sync her iPhone in case the missing iCal events would delete the events on the iPhone.

Before the upgrade, I saved off a copy of her computer (including the iCal .ics files). However, Snow Leopard does not read those files. In search of an alternative, I decided to check out Google Calendar ... and have again been reminded why I LOVE Google.

Open a google calendar and select the option to "import" calendar data. When it prompts for the file, point it to the backed up .ics file (username/Library/Application Support/iCal/Sources/calendar folder). Google will then import all the events that were saved in Tiger format.

From that point, you're on your own (Google allows Exporting of calendar data). At the least, you now have a recovered copy of you iCal items.

THANK YOU THANK YOU!! This is the only way I was able to restore my iCal Backup data from Tiger. I would've lost many important events in my history, and I'm so grateful I was able to get them back! Thanks for the workaround!

Hurrah for Google!

I'm disappointed in Apple however. :P

After you upgrade to Snow Leopard open iCal.

You will see only 2 calendars there.

Open Preferences and General.

At the bottom, click the box Sync iCal with Mobile Me.

Click the MobileMe button.

Done. 100% of your calendars and all the data will return to iCal.

Add me to the list also. After going from Tiger to Snow Leopard, I can see my calendars, but not the contents. When I boot back into Tiger from my firewire drive and export the .ics from the two calendars that are missing the entries and then boot back into Snow Leopard and try to load them I get it can't read the calendar file.

I can load those same .ics into Google calendar fine. So Google can load the .ics files created by iCal on Tiger but Snow Leopard can not? What the heck?

Please call into Apple Support. So that they know this is a legitimate problem and can get the additional data from other users who are experiencing this issue. When I called in I got a very helpful person, but he could not see where others were reporting it as an issue.

As I posted earlier I tried exporting the calendars from Tiger and then importing the .ics files in iCal in Snow Leopard and got the same problem everyone else is having, it would not import.

I did the following 3 test, and I am curious if any one else noticed this.

1. I created a calendar with a single entry - imported into Snow Leopard from .ics file.
2. I crated a repeating event (a birthday) that repeated once a year with no end - imported into Snow Leopard from .ics file.
3. I created a repeating event that started 5 months ago and goes until December of this year. - This .ics DID NOT load into Snow Leopard and gave me the same error message that I got when I tried to import my whole calendar. Is anyone else noticing this?

I am going to give this to my Apple Rep. along with the following log. Hopefully they can fix this thing. Again, please call Apple they will offer support on this since you are upgrading the OS. We need them to know that this is a problem.

Here is my log after the unsuccessful import, maybe it will mean something to someone:

9/21/09 11:33:07 PM [0x0-0x12012].com.apple.iCal[275] line 44,0: expecting "END", found 'X-WR-OCCTRIGGER' as token type 48
9/21/09 11:33:07 PM iCal[275] Component boundaries mismatch (VEVENT VALARM)
9/21/09 11:33:07 PM iCal[275] Component boundaries mismatch (VCALENDAR VEVENT)
9/21/09 11:33:07 PM iCal[275] Component boundaries mismatch (VEVENT VALARM)
9/21/09 11:33:07 PM [0x0-0x12012].com.apple.iCal[275] line 69,0: expecting "END", found 'X-WR-OCCTRIGGER' as token type 48