Index: trunk/ippScripts/scripts/detrend_stack.pl
===================================================================
--- trunk/ippScripts/scripts/detrend_stack.pl	(revision 26499)
+++ trunk/ippScripts/scripts/detrend_stack.pl	(revision 27180)
@@ -89,5 +89,5 @@
                   'DOMEFLAT_RAW'     => 'PPMERGE.OUTPUT.FLAT',
                   'SKYFLAT_RAW'      => 'PPMERGE.OUTPUT.FLAT',
-		  'SKYFLATTEST_RAW'  => 'PPMERGE.OUTPUT.FLAT',
+                  'SKYFLATTEST_RAW'  => 'PPMERGE.OUTPUT.FLAT',
                   'FLAT'             => 'PPMERGE.OUTPUT.FLAT',
                   'DOMEFLAT'         => 'PPMERGE.OUTPUT.FLAT',
@@ -114,5 +114,5 @@
                    'DOMEFLAT_RAW'     => 'DETSTATS',
                    'SKYFLAT_RAW'      => 'DETSTATS',
-		   'SKYFLATTEST_RAW'  => 'DETSTATS',
+                   'SKYFLATTEST_RAW'  => 'DETSTATS',
                    'FLAT'             => 'DETSTATS',
                    'DOMEFLAT'         => 'DETSTATS',
@@ -206,10 +206,10 @@
         &my_die("Unable to perform ppMerge: $error_code", $det_id, $iter, $class_id, $error_code);
     }
-    &my_die("Unable to find expected output file: $outputStack\n", $det_id, $iter, $class_id, $PS_EXIT_SYS_ERROR) unless -f $ipprc->file_resolve($outputStack);
-    &my_die("Unable to find expected output file: $outputCount\n", $det_id, $iter, $class_id, $PS_EXIT_SYS_ERROR) unless -f $ipprc->file_resolve($outputCount);
-    &my_die("Unable to find expected output file: $outputSigma\n", $det_id, $iter, $class_id, $PS_EXIT_SYS_ERROR) unless -f $ipprc->file_resolve($outputSigma);
+    &my_die("Unable to find expected output file: $outputStack\n", $det_id, $iter, $class_id, $PS_EXIT_SYS_ERROR) unless $ipprc->file_exists($outputStack);
+    &my_die("Unable to find expected output file: $outputCount\n", $det_id, $iter, $class_id, $PS_EXIT_SYS_ERROR) unless $ipprc->file_exists($outputCount);
+    &my_die("Unable to find expected output file: $outputSigma\n", $det_id, $iter, $class_id, $PS_EXIT_SYS_ERROR) unless $ipprc->file_exists($outputSigma);
 
     my $outputStatsReal = $ipprc->file_resolve($outputStats);
-    &my_die("Couldn't find expected output file: $outputStats", $det_id, $iter, $class_id, $PS_EXIT_SYS_ERROR) unless -f $outputStatsReal;
+    &my_die("Couldn't find expected output file: $outputStats", $det_id, $iter, $class_id, $PS_EXIT_SYS_ERROR) unless $ipprc->file_exists($outputStatsReal);
 
     # parse stats from metadata