Index: /branches/release-36/lib/MT/CMS/Template.pm
===================================================================
--- /branches/release-36/lib/MT/CMS/Template.pm (revision 2058)
+++ /branches/release-36/lib/MT/CMS/Template.pm (revision 2061)
@@ -493,5 +493,5 @@
             $param->{cache_expire_period}   = $period   if defined $period;
             $param->{cache_expire_interval} = $interval if defined $interval;
-            my @events = split ',', $obj->cache_expire_event;
+            my @events = split ',', ($obj->cache_expire_event || '');
             foreach my $name (@events) {
                 $param->{ 'cache_expire_event_' . $name } = 1;