Index: calendar/libecal/e-cal.c
===================================================================
RCS file: /cvs/gnome/evolution-data-server/calendar/libecal/e-cal.c,v
retrieving revision 1.125
diff -u -p -r1.125 e-cal.c
--- calendar/libecal/e-cal.c	4 Mar 2006 10:29:07 -0000	1.125
+++ calendar/libecal/e-cal.c	11 Apr 2006 13:29:57 -0000
@@ -3528,7 +3528,7 @@ process_detached_instances (GList *insta
 					ci->end = cid->end;
 
 					processed = TRUE;
-				} else {
+				} else if (instance_recur_id.datetime.value && recur_id.datetime.value){
 					cmp = icaltime_compare (*instance_recur_id.datetime.value,
 								*recur_id.datetime.value);
 					if ((recur_id.type == E_CAL_COMPONENT_RANGE_THISPRIOR && cmp <= 0) ||