I have a full day event in my Notes calender with startdate 20.08. and enddate 31.08.
In the ics-File this entry occurs 10 times - for every day of the calender entry.
If I open the ics-File in Outlook this entry appears multiple times. In Outlook I see it 10 events of the same title on one day.
BEGIN:VEVENT
SEQUENCE:1
CLASS:PUBLIC
CREATED:20120820T000000Z
LAST-MODIFIED:20120820T000000Z
UID:40938DA0EB87633EC12579A0002956CE
DTSTAMP:20120820T000000Z
ORGANIZER;CN=:MAILTO:@example.com
DTSTART:20120820T000000Z
DTEND:20120831T000000Z
SUMMARY:Vacation (20.08.2012 - 31.08.2012)
END:VEVENT
I'm not sure about ics-specs, but i think the DTEND-Value of this event has to be corrected. Second solution is to put this event only one time into the ics-File.