It keeps telling me the password is wrong. It isn't. I put in the same exact password for iCloud anywhere else and it works perfectly fine. Is anyone else getting this? Anyone know a fix? I just used an app to delete iCal all together before upgrading to the GM of Yosemite, but it's back and doing it again. I figured I'd try to see if anyone had a fix before deleting it again. It wouldn't be so bad but it just keeps popping up. No matter what. Even if I turn off my iCloud account in iCal. UGHHHH. EDIT: Figured it out. It wasn't iCal. It was Fantastical trying to login to iCal. FINALLY. I need an app specific password for Fantastical to login to iCloud.