Lost all calendars and events

i tried to sync ical and a google calendar, and it worked for a bit, but then suddenly all my calendars and events disappeared.
now i cant even open the preferences window or add any events at all
when i double click on the "to do" section, i get a popup that says
"You can’t change events or to do items in the selected calendar. Only the calendar administrator and any delegates with permission can make changes to read-only calendars. To make changes to the calendar, contact the calendar administrator."
can anyone help me fix this? id like to recover my events and calendars

I've had the exact same issue -- I had calendars last week, now nothing (and I can't add any calendars, even though it's my home computer and I have the admin password, of course.) I thought it might have been caused by Yahoo!, Google, or my 3rd-party software (Missing Sync) but I think you have at least allowed me to narrow it down to Google.
Did you ever get your issue resolved?

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