Backstory: I bought a Galaxy S5 and had to transfer my calendar from iCloud into Gmail to get my schedule to show up on the new phone. Since I did this I've been getting these errors when I open my iCal. They're going back to events from years ago and just keep repeating no matter which option I choose. Can somebody please shed some light on what's going on and how I can stop it so I can continue to use my calendar? Thanks!