[Evolution] Meeting invitations invalid

[Don Doumakes <don_doumakes csgsystems com>]

When I get invited to meetings via Exchange, I get an email containing a
vCalendar file attachment.  When I click on the attachment icon, the
display says "The item in the calendar is not valid.  The message does
contain a calendar, but the calendar contains no events, tasks or
free/busy information."  There's no description of what the meeting is
about, unless I view the raw email source.

Are others having the same symptoms?

I'm using evolution 2.2.1.1 and ximian-connector 2.2.3 on a Gentoo
system with kernel 2.6.11.