Index: trunk/ippScripts/scripts/lap_science.pl
===================================================================
--- trunk/ippScripts/scripts/lap_science.pl	(revision 32426)
+++ trunk/ippScripts/scripts/lap_science.pl	(revision 32428)
@@ -1162,4 +1162,7 @@
 	&my_die("Unable to parse metadata from laptool -diffcheck", $lap_id, $warp_id);
     foreach my $skycell (@$skycells) {
+	unless (defined($skycell->{stack_state})) {
+	    return(0);
+	}
 	if ($skycell->{stack_state} ne 'full') {
 	    return(0);