I have pasted below my ics file for a recurring event, It is a weekly recurring event, this recurs on monday, tuesday, wednesday. I checked the syntax, It seems to be fine. Is there anything wrong in this.
BEGIN:VCALENDAR
PRODID;X-RICAL-TZSOURCE=TZINFO:-//com.denhaven2/NONSGML ri_cal gem//EN
CALSCALE:GREGORIAN
VERSION:2.0
METHOD:REQUEST
BEGIN:VEVENT
CREATED;VALUE=DATE-TIME:20111106T175719Z
DTEND;VALUE=DATE-TIME:20111110T183000Z
STATUS:CONFIRMED
DTSTART;VALUE=DATE-TIME:20111110T160000Z
TRANSP:OPAQUE
DTSTAMP;VALUE=DATE-TIME:20111106T175719Z
LAST-MODIFIED;VALUE=DATE-TIME:20111106T175719Z
UID:availability_slot330@xyz.com
DESCRIPTION:Availability slot from mentoring program
SUMMARY:Mentoring Slot
ORGANIZER:iitm_mentor2@xyz.com
RRULE;BYDAY=MO,TU,WE;WKST=MO:FREQ=WEEKLY
EXRULE:FREQ=WEEKLY;BYDAY=SA,SU
LOCATION:Church park
SEQUENCE:0
END:VEVENT
END:VCALENDAR