Index: /branches/release-38/lib/MT/Template.pm
===================================================================
--- /branches/release-38/lib/MT/Template.pm (revision 2238)
+++ /branches/release-38/lib/MT/Template.pm (revision 2342)
@@ -395,4 +395,5 @@
 sub blog {
     my $this = shift;
+    return undef unless $this->blog_id;
     return $this->{__blog} if $this->{__blog};
     return $this->{__blog} = MT::Blog->load($this->blog_id);