Index: trunk/pswarp/src/pswarpTransformReadout_Opt.c
===================================================================
--- trunk/pswarp/src/pswarpTransformReadout_Opt.c	(revision 12523)
+++ trunk/pswarp/src/pswarpTransformReadout_Opt.c	(revision 12526)
@@ -37,5 +37,5 @@
     // XXX need to modify the grid based on this result and force the maxError < XXX
     double maxError = pswarpMapGridMaxError (grid);
-    fprintf (stderr, "maximum error using this grid sampling: %f\n", maxError);
+    psLogMsg ("pswarp", 3, "maximum error using this grid sampling: %f\n", maxError);
 
     pswarpMapGridSetGrid (grid, minX, minY, &gridX, &gridY);