Index: /tags/ipp-20130712/pstamp/scripts/pstamp_checkdependent.pl
===================================================================
--- /tags/ipp-20130712/pstamp/scripts/pstamp_checkdependent.pl	(revision 35909)
+++ /tags/ipp-20130712/pstamp/scripts/pstamp_checkdependent.pl	(revision 35910)
@@ -575,10 +575,10 @@
     } elsif ($diff_mode == $IPP_DIFF_MODE_STACK_STACK ) {
         # check the state of the input stack
-        my $command = "$stacktool -sumskyfile -stack_id $skycell->{stack2}";
+        my $command = "$stacktool -sumskyfile -stack_id $skycell->{stack1}";
         my $stack1 = runToolAndParseExpectOne($command, $verbose);
-        my_die("failed to find stackSumSkyfile for stack_id $skycell->{stack2}", $PS_EXIT_UNKNOWN_ERROR) if !$stack1;
+        my_die("failed to find stackSumSkyfile for stack_id $skycell->{stack1}", $PS_EXIT_UNKNOWN_ERROR) if !$stack1;
 
         if ($stack1->{state} ne 'full') {
-            print STDERR "input stack for diffRun $diff_id $skycell_id is not in full state faulting jobs\n";
+            print STDERR "input stack for diffRun $diff_id $skycell_id $skycell->{stack1} is not in full state faulting jobs\n";
             faultComponent('diff', $diff_id, $skycell_id, $PSTAMP_GONE);
             return $PSTAMP_GONE;
@@ -590,5 +590,5 @@
 
         if ($stack2->{state} ne 'full') {
-            print STDERR "template stack for diffRun $diff_id $skycell_id is not in full state faulting jobs\n";
+            print STDERR "template stack for diffRun $diff_id $skycell_id $skycell->{stack2} is not in full state faulting jobs\n";
             faultComponent('diff', $diff_id, $skycell_id, $PSTAMP_GONE);
             return $PSTAMP_GONE;