OS X Mavericks upgrade crashes Calendar

The next round,

I've managed to stop the Calendar crashes, don't ask me how, I'm dizzy trying everything in the book (Google anyway.)

I've managed to get Calendar back and stable but it's empty, I've somehow managed to get it staying logged into iCloud but there's nothing up there either........ can't even get it to sync with Google Calendar now, which it was before Mavericks.

I thought "On my Mac" mean't that any Calendar entries under this heading mean't it was stored locally, On my Mac !!!!!!!!!, if it is I can't find it.................

Had some file and pemission problems but I eventually managed to access what I know are good backups from the 2nd and 16th Nov. TM. (which I thought would be full of my Calendar data) but still cannot retrieve any data, completely vanished......., everything............and there was me telling everyone how stable Apple Mac is.................

twodogron, I have not had your success with ending the crashes. To some degree, I have given up, repopulated my calendar on iCloud and use that in Safari for now, awaiting an Apple fix at some point.

I also cannot find any Calendar folders. Interestingly, when I do a Spotlight search using a name of an event that was on my Calendar, the event shows (as an event), but when I click it, Calendar tries to open and crashes. Only telling you this in case it might give some idea of what is happening. It doesn't enlighten me.

I tried everything in this post..

https://discussions.apple.com/thread/4422269

I now have a stable Calendar but as I said, it is now empty. Can't find any historical data in any files or backups, a complete mystery to me.......

Same for me. iCal crashes immediately after start. I cannot activate iCloud Sync in System Preferences for iCal and Reminders. After two secondes the checkmarks disappear with no further messages.

iCloud is getting painful.

Lucky me too ...

Calendar crashed Mavericks

Process: CalendarFree [1792]

Path: /Applications/CalendarFree.app/Contents/MacOS/CalendarFree

Identifier: com.qbix.Calendar

Version: 1.7 (1.7)

Application Specific Information:

*** Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection <__NSArrayM: 0x100391060> was mutated while being enumerated.'

abort() called

terminating with uncaught exception of type NSException

Hi. Has anyone solved this issue? I do not have any backup. Is there any update to solve this?

solution not working for me.

All,

It appears that once upgraded to Mavericks, the calendar folders are no longer compatible with the latest version of iCal. Hence why it crashes.

To remediate,

Close the iCal App

Duplicate the folder (For Backup reason) /Users/YOURPROFILE/Library/Calendar

Delete all content with in /Users/YOURPROFILE/Library/Calendar

Go to:-

System Prefences | Internet Account | iCloud

Uncheck Calendars, Recheck Calendars
It will asked you if you wish to merge the database. (You may have to do this more then once)

For every other google calendar

Uncheck Calendars (if already checked), Recheck Calendars

Hopefully this will recreate all the calender folders within /Users/YOURPROFILE/Library/Calendar and start re-syncing.

Once you are satified that all your calender are syncing, delete the /Users/YOURPROFILE/Library/Calendar copy

Good Luck.

fails to enable the Calendar chechbox.

You will need to make sure iCloud are disabled first.

If all else fails, back up your directory, remove the iCloud account and re-create it.

Then continue on with the other google calendars.

It does NOT enable no matter the order.

spins for a while then fails.

tried removing all accounts and reacreating them. all fails. calendar process crashes in the background.

This sounds like my symtom before deleting the contents within the /Users/YOURPROFILE/Library/Calendar folder.

I wish I can give you more insight.

Hi there,

I have tested this out on my backup disk and there is a slight modification to the method. Will highlight this with quotation.

================================================================================ ==

It appears that once upgraded to Mavericks, the calendar folders are no longer compatible with the latest version of iCal. Hence why it crashes.

To remediate,

Close the iCal App

Duplicate the folder (For Backup reason) /Users/YOURPROFILE/Library/Calendar

Delete all content with in /Users/YOURPROFILE/Library/Calendar

Go to:-

System Prefences | Internet Account | iCloud

Uncheck Calendars, Recheck Calendars

Select the iCloud profile

Press "-" to delete the whole iCloud profile.

Recreate the iCloud profile by select "+" then iCloud

Enter your iCloud Username and Password

It will asked you if you wish to merge the database. (You may have to do this more then once)

For every other google calendar

Uncheck Calendars (if already checked), Recheck Calendars

Hopefully this will recreate all the calender folders within /Users/YOURPROFILE/Library/Calendar and start re-syncing.

Once you are satified that all your calender are syncing, delete the /Users/YOURPROFILE/Library/Calendar copy

Good Luck.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

I had the issue - where the control panel "icloud - Calendar" would not stay Ticked - and the calender software would show no calendars and would crash. (google calander would also not check)

It happened after i had done a reinstall of the OS and then a TimeMachine Restore.

i looked in the /Users/YOURPROFILE/Library/Calendar/ Folder and saw that there were files in there already... ( like "0D7DA1BF-F9A7-45DB-981A-68BA0DFD0CF8.caldav" Folders etc)

I resolved the Problem by setting the permissions on the /Users/YOURPROFILE/Library/Calendar/

folder.

I selected Get Info on the folder, and pressed the Padlock to unlock the sharing and permissions area at the bottom. (using the Administrator Password)

i added my User (in my case my user is called "Admin") and i set the user to have Read & Write Permissions

i then pressed the little "Gear Cog Icon" (next to the plus minus icon, and selected "Apply to enclosed Items"

I then restarted the Mac - and when it came back up i was able to tick the Calendar item in icloud control pannel - OK.

Then i opened calender and all was OK (my 7 calenders were back).

(i did the same tick for google calender and all ok)

hope this helps someone else.

regards

Londons