Index: /tags/ipp-20110622/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm
===================================================================
--- /tags/ipp-20110622/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm	(revision 32639)
+++ /tags/ipp-20110622/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm	(revision 32640)
@@ -302,5 +302,5 @@
         $command = "$stacktool -sumskyfile -dbname $imagedb";
         $id_opt = "-stack_id";
-        $component_args = " -skycell_id $skycell_id" if $skycell_id;
+        $component_args = " -skycell_id $skycell_id" if $skycell_id and $skycell_id ne  'all';
 
         if (!$unconvolved) {