Index: /trunk/psLib/src/imageops/psImageMapFit.c
===================================================================
--- /trunk/psLib/src/imageops/psImageMapFit.c	(revision 30077)
+++ /trunk/psLib/src/imageops/psImageMapFit.c	(revision 30078)
@@ -83,5 +83,7 @@
         map->map->data.F32[0][0]   = psStatsGetValue(map->stats, mean);
         map->error->data.F32[0][0] = psStatsGetValue(map->stats, stdev);
-	*pGoodFit = true;
+        if (isfinite(map->map->data.F32[0][0]) && isfinite( map->error->data.F32[0][0])) {
+            *pGoodFit = true;
+        }
         return true;
     }