Index: trunk/ippScripts/scripts/ipp_serial_diff.pl
===================================================================
--- trunk/ippScripts/scripts/ipp_serial_diff.pl	(revision 16749)
+++ trunk/ippScripts/scripts/ipp_serial_diff.pl	(revision 16752)
@@ -80,4 +80,5 @@
 	
 	my $outroot = caturi( $workdir, "tess_$tess_id", $skycell_id, "$tess_id.$skycell_id.dif.$diff_id" );
+	$ipprc->outroot_prepare( $outroot );
 
 	my $command = "$diff_skycell --diff_id $diff_id --dbname $dbname --outroot $outroot";