Index: trunk/ppStack/src/ppStackLoop.c
===================================================================
--- trunk/ppStack/src/ppStackLoop.c	(revision 20777)
+++ trunk/ppStack/src/ppStackLoop.c	(revision 20824)
@@ -908,4 +908,6 @@
                 }
             }
+
+            // Images without a list of rejected pixels (the list may be empty) are rejected completely
             rejected->data[i] = reject;