diff --git a/data/CTX/Makefile b/data/CTX/Makefile
index ba198f460..ab0386e53 100644
--- a/data/CTX/Makefile
+++ b/data/CTX/Makefile
@@ -42,12 +42,13 @@ map/map-PC.tif: mapprojected
 
 map/map-DEM.tif: map/map-PC.tif
 	cd map; \
-	$(POINT2DEM) -r mars --nodata -32767 map-PC.tif
+	$(POINT2DEM) -r mars --nodata -32767 map-PC.tif --error --orthoimage map-L.tif
 
 map/map-DEM_CMAP.tif: map/map-DEM.tif
 	cd map; \
 	$(HILLSHADE) map-DEM.tif; \
-	$(COLORMAP) -s map-DEM_HILLSHADE.tif map-DEM.tif
+	$(COLORMAP) -s map-DEM_HILLSHADE.tif map-DEM.tif; \
+	$(COLORMAP) map-DEMError.tif
 
 nonmap/nonmap-PC.tif: nonmapprojected
 	$(STEREO) P02_001981_1823_XI_02N356W.cal.cub P03_002258_1817_XI_01N356W.cal.cub nonmap/nonmap -s stereo.nonmap
@@ -59,10 +60,11 @@ nonmap/nonmap-DEM.tif: nonmap/nonmap-PC.tif
 nonmap/nonmap-DEM_CMAP.tif: nonmap/nonmap-DEM.tif
 	cd nonmap; \
 	$(HILLSHADE) nonmap-DEM.tif; \
-	$(COLORMAP) -s nonmap-DEM_HILLSHADE.tif nonmap-DEM.tif
+	$(COLORMAP) -s nonmap-DEM_HILLSHADE.tif nonmap-DEM.tif; \
+	$(COLORMAP) map-DEMError.tif
 
 clean:
 	rm -rf nonmap map *.vwip
 
-distclean:
-	rm -rf *.cub map *~ *.match
\ No newline at end of file
+distclean: clean
+	rm -rf *.cub *~ *.match
\ No newline at end of file
diff --git a/data/MOC/Makefile b/data/MOC/Makefile
index 080fb6349..b553f452d 100644
--- a/data/MOC/Makefile
+++ b/data/MOC/Makefile
@@ -61,11 +61,8 @@ $(PREFIX)-F-H.tif: $(POINTCLOUD)
 $(PREFIX).ive: $(POINTCLOUD)
 	cd $(RESULTSDIR); $(POINT2MESH) $(RESULTSDIR)-PC.tif $(RESULTSDIR)-L.tif
 
-$(PREFIX)-DRG.tif: $(POINTCLOUD)
-	cd $(RESULTSDIR); $(POINT2DEM) -r mars --orthoimage $(RESULTSDIR)-L.tif $(RESULTSDIR)-PC.tif;
-
 $(PREFIX)-DEM.tif: $(POINTCLOUD)
-	cd $(RESULTSDIR); $(POINT2DEM) -r mars -n --nodata -32767 $(RESULTSDIR)-PC.tif;
+	cd $(RESULTSDIR); $(POINT2DEM) -r mars --orthoimage $(RESULTSDIR)-L.tif -n --error --nodata -32767 $(RESULTSDIR)-PC.tif;
 
 $(PREFIX)-OrthoR.tif: $(PREFIX)-DEM.tif
 	cd $(RESULTSDIR); $(ORTHOPROJECT) $(RESULTSDIR)-DEM.tif ../M0100115.cub $(RESULTSDIR)-OrthoR.tif;
@@ -76,9 +73,10 @@ $(PREFIX)-OrthoL.tif: $(PREFIX)-DEM.tif
 $(PREFIX)-DEM_CMAP.tif: $(PREFIX)-DEM.tif
 	cd $(RESULTSDIR); \
 	$(HILLSHADE) $(RESULTSDIR)-DEM.tif; \
-	$(COLORMAP) -s $(RESULTSDIR)-DEM_HILLSHADE.tif $(RESULTSDIR)-DEM.tif
+	$(COLORMAP) -s $(RESULTSDIR)-DEM_HILLSHADE.tif $(RESULTSDIR)-DEM.tif; \
+	$(COLORMAP) $(RESULTSDIR)-DEMError.tif
 
-products_map: $(PREFIX)-F-H.tif $(PREFIX).ive $(PREFIX)-DRG.tif $(PREFIX)-OrthoL.tif $(PREFIX)-OrthoR.tif E0201461.map/E0201461.kml M0100115.map/M0100115.kml $(PREFIX)-DEM_CMAP.tif
+products_map: $(PREFIX)-F-H.tif $(PREFIX).ive $(PREFIX)-OrthoL.tif $(PREFIX)-OrthoR.tif E0201461.map/E0201461.kml M0100115.map/M0100115.kml $(PREFIX)-DEM_CMAP.tif
 
 $(POINTCLOUDU): $(NONMAPPED)
 	mkdir -p $(RESULTSDIRU)
@@ -87,20 +85,14 @@ $(POINTCLOUDU): $(NONMAPPED)
 $(PREFIXU).ive: $(POINTCLOUDU)
 	cd $(RESULTSDIRU); $(POINT2MESH) $(RESULTSDIRU)-PC.tif $(RESULTSDIRU)-L.tif
 
-$(PREFIXU)-DRG.tif: $(POINTCLOUDU)
-	cd $(RESULTSDIRU); \
-	$(POINT2DEM) -r mars --orthoimage $(RESULTSDIRU)-L.tif $(RESULTSDIRU)-PC.tif;
-
-$(PREFIXU)-DEM.tif: $(POINTCLOUDU)
-	cd $(RESULTSDIRU); \
-	$(POINT2DEM) -r mars -n --nodata -32767 $(RESULTSDIRU)-PC.tif;
-
-$(PREFIXU)-DEM_CMAP.tif: $(PREFIXU)-DEM.tif
+nonmap_point2dem: $(POINTCLOUDU)
 	cd $(RESULTSDIRU); \
+	$(POINT2DEM) -r mars --orthoimage $(RESULTSDIRU)-L.tif $(RESULTSDIRU)-PC.tif --error --nodata -32767 -n; \
 	$(HILLSHADE) $(RESULTSDIRU)-DEM.tif; \
-	$(COLORMAP) -s $(RESULTSDIRU)-DEM_HILLSHADE.tif $(RESULTSDIRU)-DEM.tif
+	$(COLORMAP) -s $(RESULTSDIRU)-DEM_HILLSHADE.tif $(RESULTSDIRU)-DEM.tif; \
+	$(COLORMAP) $(RESULTSDIRU)-DEMError.tif
 
-products_nonmap: $(PREFIXU).ive $(PREFIXU)-DRG.tif $(PREFIXU)-DEM_CMAP.tif
+products_nonmap: $(PREFIXU).ive nonmap_point2dem
 
 clean:
 	rm -rf $(RESULTSDIR) $(RESULTSDIRU)