Ical Error message.

I had a calendar that I sinked from gmail onto my Ical and upon trying to clean up the calendars on the left hand side I tried to delete the one calendar I no longer use that is associated with that particular email address, now every time it refreshes I get the error message: "The server responded with an error https://calendar.google.com/calendar/dav/mye-mail@gmail.com/user/ is not a location that supports this request." And all I can do about it is click ok. I went into my gmail account and deleted the calendar from the website as well, but it doesn't seem to have helped. I also attempted the tried and true computer restart and that hasn't solved the problem either. THis is constant whenever iCal is open...please help.