Index: /trunk/ippScripts/scripts/detrend_reject_exp.pl
===================================================================
--- /trunk/ippScripts/scripts/detrend_reject_exp.pl	(revision 12675)
+++ /trunk/ippScripts/scripts/detrend_reject_exp.pl	(revision 12676)
@@ -121,8 +121,10 @@
 my $reject_meanstdev = rejection_limit( 'ENSEMBLE.MEANSTDEV', $det_type, $filter );
 
-$workdir = $ipprc->convert_filename_absolute( $workdir );
-
 my $logName = "$camera.$det_type.$det_id.$iter.detreject.log"; # Name for log
-$logName = File::Spec->catfile( $workdir, $logName );
+if (defined $workdir) {
+    $workdir = $ipprc->convert_filename_absolute( $workdir );
+    my $subdir = "$camera.$det_type.$det_id";
+    $logName = File::Spec->catfile( $workdir, $subdir, $logName );
+}
 my $logFile;
 unless ($no_op) {