Index: trunk/ppImage/src/ppImageSetMaskBits.c
===================================================================
--- trunk/ppImage/src/ppImageSetMaskBits.c	(revision 23534)
+++ trunk/ppImage/src/ppImageSetMaskBits.c	(revision 23535)
@@ -28,4 +28,8 @@
     // mask for below-range data  (default to RANGE if not defined)
     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");