Can't add invitation to calendar My girlfriend sent me an invitation from an Apple device to an alias that sends to both my work and home e-mail addresses.  I clicked on the Accept button and it says that I Accepted but I don't see the event on my iPhone or on www.icloud.com.  None of these e-mail addresses -- home, work, or alias -- match my Apple ID.  Is there a way I can get this into my calendar?  I tried forwarding the work e-mail to my home address and adding the event from the .ics file but I get This invitation data is out of date when I try and do this.
I got the "this information data is out of date" message on my iPhone, and the work-around for me (based on a different discussion thread) was to temporarily disable wifi. With wifi disabled, the "add to calendar" option re-appeared. Go figure.