Weird message in iCal "Error Locating Account Information"

Question

Hi,
I've a problem syncing iCal with Google calendar.
It works in the beginning very well, but sometimes I receive the message:
Error Locating Account Information
Request encountered an unexpected error (domain CalDAV No Calendar Home Error / code 1).
And the calendar stops syncing.
What is this message ? Why works well and then, suddenly, stops ?(without change any setting)
Mac OS X - 10.6.7
iCal 4.0.4 
Thanks

Answer 1

Greetings,
That is an error message coming back from the Google CalDAV server when iCal requests an update of your calendars.
1.) First make a backup of your calendars by clicking on each one, one at a time and going to File > Export > Export and then saving the files somewhere for safekeeping.
2.) Delete the Google account from iCal > Preferences > Accounts
3.) Remove the following to the trash and restart your computer:
Home > Library > Caches > com.apple.ical and / or "ical"
Home > Library > Calendars > Calendar Cache, Cache, Cache 1, 2, 3, etc. (Do not remove Sync Cache or Theme Cache)
Home > Library > Preferences > com.apple.ical (There may be more than one of these. Remove them all.)
4.) Launch iCal and then go to iCal > Preferences > Accounts and re-add your Google account being very careful to type in the user name and password correctly.
See if that helps.