Erase/delete iCal event

Are you clicking on the option to delete all future events or just the selected event?

 

Try going to the second instance

of the event and "Delete All Future Occurrences" from there. If that makes those disappear, go back and take out the original. Don't know why but sometimes it needs to go that route.

HTH and Cheers!

 

How to fix ical events and calendars that can't be deleted

Yeah, I had same problem too, and only way I found to delete those calendar items without them coming back is this:

I just found a solution: Go into iSync, (use macintosh HD, applications), then go to Preferences. Turn off iSync (uncheck enable syncing on this computer). Then Reset Sync History (be sure to push Reset Sync History on second screen too). Then logoff/logon or reboot. Then you can delete calendar events or calendars or whatever you need. If you need to sync again, just go into iSync and re-enable syncing. The problem does not seem to come back. I tried all the other solutions posted and none worked except for this one.