Sorry if this is answered elsewhere. All my forum and Google searches turn up are issues related to iOS and/or Google and/or Exchange (none of which applies here). I have three subscriptions in Calendar on my MBA: US Holidays (from Apple), Husker Football, and TripIt. Suddenly, they no longer refresh...? Here's the error that occurs when I try to manually refresh: (So that it's searchable in the forums: "Your calendar couldn't be refreshed. The request for webcal://www. ... .ics failed.") Crazy thing is that they work just fine on my iPhone and iPad, under the iCloud section in all locations. Any idea what's going on...and, more important, how to fix the problem?