Index: trunk/ippTests/ippCheck/warpmask.pro
===================================================================
--- trunk/ippTests/ippCheck/warpmask.pro	(revision 42085)
+++ trunk/ippTests/ippCheck/warpmask.pro	(revision 42125)
@@ -44,4 +44,23 @@
   # NOTE: Mref is chosen to match filter for this exposure
   data $refsrcs                 ;
+
+  # first check if the FITS table has any entries
+  read -fits DATA -sizes
+  if ($table:Ny == 0) 
+    echo "WARNING: empty reference table $refsrcs"
+
+    # generate empty output vectors for output file
+    $OUT_FIELDS = 
+    foreach field $REF_FIELDS_WRP $XTR_FIELDS_WRP
+      $OUT_FIELDS = $OUT_FIELDS $field\_out
+      create -empty $field\_out
+    end
+    
+    sprintf output "%s/%s.%s.wrp.stf" $OUTDIR $expname $OUTVERSION
+    write -fits DATA $output $OUT_FIELDS
+
+    return
+  end
+
   if ($USE_CAMSOURCE) 
    read -fits DATA Rref_out Dref_out Mref_out