Index: trunk/psModules/src/detrend/pmRemnance.c
===================================================================
--- trunk/psModules/src/detrend/pmRemnance.c	(revision 20662)
+++ trunk/psModules/src/detrend/pmRemnance.c	(revision 20666)
@@ -30,5 +30,6 @@
     psStats *stats = psStatsAlloc(PS_STAT_ROBUST_MEDIAN | PS_STAT_ROBUST_STDEV); // Statistics
     if (!psImageBackground(stats, NULL, image, mask, maskVal, rng)) {
-        psError(PS_ERR_UNKNOWN, false, "Unable to calculate image statistics.");
+        psWarning("Unable to calculate image statistics: masking entire readout.");
+        psBinaryOp(mask, mask, "|", psScalarAlloc(maskRem, PS_TYPE_MASK));
         psFree(stats);
         psFree(rng);