Index: trunk/psastro/src/psastroFixChipsTest.c
===================================================================
--- trunk/psastro/src/psastroFixChipsTest.c	(revision 21409)
+++ trunk/psastro/src/psastroFixChipsTest.c	(revision 23989)
@@ -140,5 +140,8 @@
     psStats *stats;
     stats = psStatsAlloc (PS_STAT_ROBUST_MEDIAN | PS_STAT_ROBUST_STDEV);
-    psVectorStats (stats, dX, NULL, NULL, 0);
+    if (!psVectorStats (stats, dX, NULL, NULL, 0)) {
+	psError(PS_ERR_UNKNOWN, false, "failure to measure stats");
+	return false;
+    }
     Xo = stats->robustMedian;
     fprintf (stderr, "offset x: %f +/- %f\n", stats->robustMedian, stats->robustStdev);
@@ -146,5 +149,8 @@
 
     stats = psStatsAlloc (PS_STAT_ROBUST_MEDIAN | PS_STAT_ROBUST_STDEV);
-    psVectorStats (stats, dY, NULL, NULL, 0);
+    if (!psVectorStats (stats, dY, NULL, NULL, 0)) {
+	psError(PS_ERR_UNKNOWN, false, "failure to measure stats");
+	return false;
+    }
     Yo = stats->robustMedian;
     fprintf (stderr, "offset y: %f +/- %f\n", stats->robustMedian, stats->robustStdev);
@@ -168,5 +174,8 @@
     }
     stats = psStatsAlloc (PS_STAT_ROBUST_MEDIAN | PS_STAT_ROBUST_STDEV);
-    psVectorStats (stats, dT, NULL, NULL, 0);
+    if (!psVectorStats (stats, dT, NULL, NULL, 0)) {
+	psError(PS_ERR_UNKNOWN, false, "failure to measure stats");
+	return false;
+    }
     float To = stats->robustMedian;
     fprintf (stderr, "offset t: %f +/- %f\n", stats->robustMedian, stats->robustStdev);