Index: trunk/ppMerge/src/ppMergeConfig.c
===================================================================
--- trunk/ppMerge/src/ppMergeConfig.c	(revision 7073)
+++ trunk/ppMerge/src/ppMergeConfig.c	(revision 7355)
@@ -61,8 +61,16 @@
                      "Array of inputs images", files);
 
-#if 0
+#ifndef OMIT_PSDB
     // Define database handle, if required
-    config->database = pmConfigDB(config->site);
+    config->database = pmConfigDB(config);
 #endif
+
+    // Add concepts for scale and zero
+    psMetadataItem *scaleItem = psMetadataItemAllocF32("PPMERGE.SCALE", "Scaling for ppMerge", NAN);
+    psMetadataItem *zeroItem = psMetadataItemAllocF32("PPMERGE.ZERO", "Zero offset for ppMerge", NAN);
+    pmConceptRegister(scaleItem, NULL, NULL, PM_FPA_LEVEL_CELL);
+    pmConceptRegister(zeroItem, NULL, NULL, PM_FPA_LEVEL_CELL);
+    psFree(scaleItem);
+    psFree(zeroItem);
 
     return config;