Index: calendar/e-cal-backend-exchange-calendar.c
===================================================================
RCS file: /cvs/gnome/evolution-exchange/calendar/e-cal-backend-exchange-calendar.c,v
retrieving revision 1.51
diff -u -p -r1.51 e-cal-backend-exchange-calendar.c
--- calendar/e-cal-backend-exchange-calendar.c	25 Feb 2006 06:36:08 -0000	1.51
+++ calendar/e-cal-backend-exchange-calendar.c	27 Feb 2006 08:11:34 -0000
@@ -621,7 +621,7 @@ check_owner_partstatus_for_declined (ECa
 	
 	param = icalproperty_get_first_parameter (icalprop, ICAL_PARTSTAT_PARAMETER);
 	
-	if (icalparameter_get_partstat (param) == ICAL_PARTSTAT_DECLINED) {
+	if (param && icalparameter_get_partstat (param) == ICAL_PARTSTAT_DECLINED) {
 		return TRUE;
 	}
 	return FALSE;
