Index: trunk/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm
===================================================================
--- trunk/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm	(revision 28560)
+++ trunk/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm	(revision 28562)
@@ -514,4 +514,8 @@
         if ($image->{fault}) {
             print STDERR "selected difference image $id $image->{diff_id} $skycell_id has fault: $image->{fault}\n";
+            next;
+        }
+        if ($image->{quality}) {
+            print STDERR "selected difference image $id $image->{diff_id} $skycell_id has poor quality: $image->{quality}\n";
             next;
         }