Can't enable Google Calendar in iCal

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.

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.

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I've been having the same issue and have been pulling my hair out all day. I follwed these steps and can confirm this 100% worked for me. Everything is fixed, iCal is syncing properly under the "Internet Accounts" settings and I'm no longer getting any 'secure connection could not be established' errors.

Thanks so much for posting this!

THANK YOU! This solution worked for me. This should be a big sticky in the FAQ for ical.

Boy, did this not work for me.

After setting up an iCloud account for work purposes (thought it would enable file sharing, but other problems too numerous to mention ...)

First time I used iCal after the iCloud debacle, all my color-coded 'calendars' were gone and File-New Calendar did not work at all.

Trying to restore from Time Machine worked no better. I can see a few events, but only the last month or so.

Using Calendar Accounts, I can "add" calendars for my two main gmail accounts, but they contain no data, and I can't seem to switch to them or sync them.