ical and Google sync

First get the google calendar url from the web interface - it's in the calendar settings page. Then from iCal, click Calendar->subscribe and paste in the calendar URL.

 

Set it up as a new account in iCal preferences..."Google" should be an option in "Account Type". What this really does is set it up as CALDAV. Syncing should work right out of the box.

I remember seeing sync issues with some accounts in Mac OS X 10.5 "Leopard" that couldn't be resolved. Creating a new Gmail account for calendars fixed those.

 

Maybe you should tell us all the methods you have tried as well as your Mac model and OS version.

 

With the method I suggested, (using a subscription), you will have to do all the calendar updates with the google calendar interface. It will probably not be the best method for your purposes since I think you want to update the google calendar from the iCal interface.

I use that method for group calendars. I.E. I maintain a calendar for a non-profit organization. I send the url to the other members of the organization so they can import the calendar contents into their own calendar. By using the subscription method, ical will periodically check the calendar for updates.

 

To eliminate some sort of weirdness with your Google account as the cause, create a new GMail account and try to set that one up in iCal.