Index: trunk/ippScripts/scripts/diff_skycell.pl
===================================================================
--- trunk/ippScripts/scripts/diff_skycell.pl	(revision 38070)
+++ trunk/ippScripts/scripts/diff_skycell.pl	(revision 38071)
@@ -138,6 +138,5 @@
     $diff_type = "SS";
 }
-elsif (((${ $files }[0]->{stack_id} != 0)&&(${ $files }[1]->{stack_id} != 0))||
-       ((${ $files }[0]->{stack_id} != 0)&&(${ $files }[1]->{stack_id} != 0))) {
+elsif (((${ $files }[0]->{warp_id} != 0)&&(${ $files }[1]->{stack_id} != 0))) {
     $diff_type = "WS";
 }