Index: trunk/ippconfig/recipes/ppStack.config
===================================================================
--- trunk/ippconfig/recipes/ppStack.config	(revision 13616)
+++ trunk/ippconfig/recipes/ppStack.config	(revision 13718)
@@ -5,4 +5,4 @@
 CONVOLVE.REJ	F32	10.0		# Rejection threshold in convolution (sigma)
 EXTENT		F32	3.0		# Extent of Gaussian convolution (sigma)
-MASK.BAD	STR	SAT,BAD		# Mask value of bad pixels
+MASK.BAD	STR	BLANK,SAT,BAD	# Mask value of bad pixels
 MASK.BLANK	STR	BLANK		# Mask value to give blank pixels