I added a calendar from my Google account in Ical and now it quit about 3 seconds after loading.
I have tried the solution described here: https://discussions.apple.com/message/3680441#3680441
but I don't even have user's Library > Application Support > iCal
OS X 10.6.7
user's library? – Ben Wyatt Jun 22 '11 at 1:14~/Library/Application\ Support/iCaldoesn't exist. – c00lryguy Jun 22 '11 at 1:17/Library/Preferences/com.apple.iCal.plistand/Library/Preferences/com.apple.iCal.helper.plistto the Desktop and still no luck. – c00lryguy Jun 22 '11 at 1:28