iCloud calender Facebook error

I have facebook set up on icloud via the systems preferrences screen on my Mac. Everytime I open the calender app on my Mac, I get an error message saying "Calendar can't connect to the Facebook account "Facebook" followed by my facebook linked email address and a password input box. When I do enter the correct facebook password I get a "server responded with an error" message. No facebook events are being shown on my calendar. Any help would be appreciated. Thanks.