Index: branches/pap/ppImage/src/ppImageSetMaskBits.c
===================================================================
--- branches/pap/ppImage/src/ppImageSetMaskBits.c	(revision 23511)
+++ branches/pap/ppImage/src/ppImageSetMaskBits.c	(revision 23607)
@@ -27,6 +27,10 @@
 
     // mask for below-range data  (default to RANGE if not defined)
-    options->badMask = pmConfigMaskGet("BAD", config);
-    psAssert (options->badMask, "bad mask not set");
+    options->badMask = pmConfigMaskGet("LOW", config);
+    if (!options->badMask) {
+        // XXX look up old name for backward compatability
+        options->badMask = pmConfigMaskGet("BAD", config);
+    }
+    psAssert (options->badMask, "low mask not set");
 
     // save MASK and MARK on the PSPHOT recipe